user24: I went through all the tags which only had at most 3 questions tagged. The following are all the ones which do not correspond to a particular series, person, or studio, ordered in the same way they are ordered at https://anime.stackexchange.com/tags. These seem to be the most controversial tags, though there may be other controversies with the larger tags in this category. I've ignored those for now since I think each of them deserves a separate meta post.
production anime-physics music technology voice-acting retag season prequel origin sound-effects meme mistranslation light-novel live-action manga-history currently-airing doujinshi fillers game-history censorship conventions copyright crossovers amv analysis animation-mistakes
It seems to me that some of these are good tags, and some are very clearly not necessary. Which should we keep, which should we merge, and which should we get rid of?
Note: I'm asking this because it seems like applying the changes I propose below to 26 tags on my own without community support would be overstepping my bounds, and also so that we can get a mod to do the merges without bumping questions.

user24: Here are my suggestions. These are based on three principles, namely that A) a tag should be something that someone could legitimately be an expert on, B) tags should not be prone to misuse, and C) we should not have two tags with identical or nearly identical scopes. I've also only commented on tags that I think are not likely to generate a lot of debate; those tags would be better discussed on their own individual posts.

production seems redundant, as we already have anime-production and manga-production. The two open questions on production could both be retagged as anime-production. The closed one is about Visual Novel production. If the tag were going to be used for questions about production of media other than anime and manga, I'd say keep but rename. As it is now, I say merge with anime-production (and remove from the VN question). status-complete
anime-physics is a borderline case. I don't see much reason to keep it, but I also don't see much reason to get rid of it. I'll abstain on this one.
music can probably stay. The only question is whether music and theme-song are different enough to warrant having two separate tags. However, of the 4 questions tagged with theme-song, 3 of them aren't solely about the music from the song, so I say keep both tags.
technology is a strange one. The wiki description says it's to be used both for real-world technology and in-universe technology, which obviously are very different things. I say we make it only for in-universe technology. If there are any real-world technology questions which are on topic on this site, we should make a separate tag for them, but if not then we can get rid of it. I'm not really opposed to getting rid of the tag entirely either, but I'll abstain on that point. status-complete Changed tag wiki to reflect that.
voice-acting seems fine to me. Keep.
retag probably should be discussed on it's own meta post, but for now I say keep.
season No need for this. Burninate. status-complete
prequel I don't see what this is good for. Destroy status-complete
origin Merge with anime-history status-complete
sound-effects The single question tagged with this would be better tagged with japanese-language. In principle I think this tag might be okay, though I suspect it would be a subtag of tropes.
meme isn't quite the same as any other tags we have, and it's not prone to misuse. We probably won't get many questions on it, but for now I say keep.
mistranslation Merge with japanese-language status-complete - Note that no synonym was made.
fillers I have no opinion on this. Abstain.
light-novel It's questionable whether this is necessary. In my opinion this should be discussed at Add "light-novel" to tag blacklist rather than here.
live-action is similar to light-novel. It should be discussed individually on a separate post.
manga-history I propose that we merge this, anime-history, and game-history into a broad history tag. There isn't too much potential for misuse of such a tag, and there isn't much difference in the scope of these tags.
currently-airing Kill. Too prone to misuse, and there aren't many other questions that can be asked about this. The one question with this tag should be retagged, but none of the existing tags works. I suggest anime-resources for these sorts of questions. That, or we could move it to meta as an FAQ question.
doujinshi Again similar to light-novel. This should get it's own meta post.
fillers I'll abstain, though I lean towards getting rid of it slightly.
game-history see above.
censorship is probably okay, though it's almost a subtag of anime-production. keep
conventions My trouble with this is, are there any on-topic questions about conventions? If there are, we can keep it. If not, we should get rid of it. The only currently tagged question is closed, though it might be a candidate for reopening.
copyright seems fairly broadly off-topic. There are a few questions one can ask about copyright that are on-topic here, but I think it's few enough that we don't need a tag for it. Leaning towards kill, though I'm a bit iffy on this one.
crossovers I see no problem with this one, except that a couple of questions that could be tagged with this aren't. Keep.
amv AMVs usually refers to fan productions which are not official. I think they are almost entirely off-topic here. It can very rarely refer to officially produced AMVs by studios, but that is not the norm. As such, I say kill.
analysis seems to have been added in the early days, perhaps from Movies & TV where it is a common tag. However, I think there is no need for it here. Kill. status-complete
animation-mistakes I guess I'm okay with. Keep.


Since this is a very long post and most of the disagreement is likely to be over a small number of tags, I'd suggest voicing any disagreement as a separate answer rather than a comment here so that it can be properly voted on.

24: <p>I went through all the tags which only had at most 3 questions tagged. The following are all the ones which do not correspond to a particular series, person, or studio, ordered in the same way they are ordered at <a href="https://anime.stackexchange.com/tags">https://anime.stackexchange.com/tags</a>. These seem to be the most controversial tags, though there may be other controversies with the larger tags in this category. I've ignored those for now since I think each of them deserves a separate meta post.</p>

<p><a href="https://anime.stackexchange.com/questions/tagged/production" class="post-tag" title="show questions tagged &#39;production&#39;" rel="tag">production</a> <a href="https://anime.stackexchange.com/questions/tagged/anime-physics" class="post-tag" title="show questions tagged &#39;anime-physics&#39;" rel="tag">anime-physics</a> <a href="https://anime.stackexchange.com/questions/tagged/music" class="post-tag" title="show questions tagged &#39;music&#39;" rel="tag">music</a> <a href="https://anime.stackexchange.com/questions/tagged/technology" class="post-tag" title="show questions tagged &#39;technology&#39;" rel="tag">technology</a> <a href="https://anime.stackexchange.com/questions/tagged/voice-acting" class="post-tag" title="show questions tagged &#39;voice-acting&#39;" rel="tag">voice-acting</a> <a href="https://anime.stackexchange.com/questions/tagged/retag" class="post-tag" title="show questions tagged &#39;retag&#39;" rel="tag">retag</a> <a href="https://anime.stackexchange.com/questions/tagged/season" class="post-tag" title="show questions tagged &#39;season&#39;" rel="tag">season</a> <a href="https://anime.stackexchange.com/questions/tagged/prequel" class="post-tag" title="show questions tagged &#39;prequel&#39;" rel="tag">prequel</a> <a href="https://anime.stackexchange.com/questions/tagged/origin" class="post-tag" title="show questions tagged &#39;origin&#39;" rel="tag">origin</a> <a href="https://anime.stackexchange.com/questions/tagged/sound-effects" class="post-tag" title="show questions tagged &#39;sound-effects&#39;" rel="tag">sound-effects</a> <a href="https://anime.stackexchange.com/questions/tagged/meme" class="post-tag" title="show questions tagged &#39;meme&#39;" rel="tag">meme</a> <a href="https://anime.stackexchange.com/questions/tagged/mistranslation" class="post-tag" title="show questions tagged &#39;mistranslation&#39;" rel="tag">mistranslation</a> <a href="https://anime.stackexchange.com/questions/tagged/light-novel" class="post-tag" title="show questions tagged &#39;light-novel&#39;" rel="tag">light-novel</a> <a href="https://anime.stackexchange.com/questions/tagged/live-action" class="post-tag" title="show questions tagged &#39;live-action&#39;" rel="tag">live-action</a> <a href="https://anime.stackexchange.com/questions/tagged/manga-history" class="post-tag" title="show questions tagged &#39;manga-history&#39;" rel="tag">manga-history</a> <a href="https://anime.stackexchange.com/questions/tagged/currently-airing" class="post-tag" title="show questions tagged &#39;currently-airing&#39;" rel="tag">currently-airing</a> <a href="https://anime.stackexchange.com/questions/tagged/doujinshi" class="post-tag" title="show questions tagged &#39;doujinshi&#39;" rel="tag">doujinshi</a> <a href="https://anime.stackexchange.com/questions/tagged/fillers" class="post-tag" title="show questions tagged &#39;fillers&#39;" rel="tag">fillers</a> <a href="https://anime.stackexchange.com/questions/tagged/game-history" class="post-tag" title="show questions tagged &#39;game-history&#39;" rel="tag">game-history</a> <a href="https://anime.stackexchange.com/questions/tagged/censorship" class="post-tag" title="show questions tagged &#39;censorship&#39;" rel="tag">censorship</a> <a href="https://anime.stackexchange.com/questions/tagged/conventions" class="post-tag" title="show questions tagged &#39;conventions&#39;" rel="tag">conventions</a> <a href="https://anime.stackexchange.com/questions/tagged/copyright" class="post-tag" title="show questions tagged &#39;copyright&#39;" rel="tag">copyright</a> <a href="https://anime.stackexchange.com/questions/tagged/crossovers" class="post-tag" title="show questions tagged &#39;crossovers&#39;" rel="tag">crossovers</a> <a href="https://anime.stackexchange.com/questions/tagged/amv" class="post-tag" title="show questions tagged &#39;amv&#39;" rel="tag">amv</a> <a href="https://anime.stackexchange.com/questions/tagged/analysis" class="post-tag" title="show questions tagged &#39;analysis&#39;" rel="tag">analysis</a> <a href="https://anime.stackexchange.com/questions/tagged/animation-mistakes" class="post-tag" title="show questions tagged &#39;animation-mistakes&#39;" rel="tag">animation-mistakes</a></p>

<p>It seems to me that some of these are good tags, and some are very clearly not necessary. Which should we keep, which should we merge, and which should we get rid of?</p>

<p>Note: I'm asking this because it seems like applying the changes I propose below to 26 tags on my own without community support would be overstepping my bounds, and also so that we can get a mod to do the merges without bumping questions.</p>
 24: <p>Here are my suggestions. These are based on three principles, namely that A) a tag should be something that someone could legitimately be an expert on, B) tags should not be prone to misuse, and C) we should not have two tags with identical or nearly identical scopes. I've also only commented on tags that I think are not likely to generate a lot of debate; those tags would be better discussed on their own individual posts.</p>

<ul>
<li><s><a href="https://anime.stackexchange.com/questions/tagged/production" class="post-tag" title="show questions tagged &#39;production&#39;" rel="tag">production</a> seems redundant, as we already have <a href="https://anime.stackexchange.com/questions/tagged/anime-production" class="post-tag" title="show questions tagged &#39;anime-production&#39;" rel="tag">anime-production</a> and <a href="https://anime.stackexchange.com/questions/tagged/manga-production" class="post-tag" title="show questions tagged &#39;manga-production&#39;" rel="tag">manga-production</a>. The two open questions on <a href="https://anime.stackexchange.com/questions/tagged/production" class="post-tag" title="show questions tagged &#39;production&#39;" rel="tag">production</a> could both be retagged as <a href="https://anime.stackexchange.com/questions/tagged/anime-production" class="post-tag" title="show questions tagged &#39;anime-production&#39;" rel="tag">anime-production</a>. The closed one is about Visual Novel production. If the tag were going to be used for questions about production of media other than anime and manga, I'd say keep but rename. As it is now, I say <strong>merge with <a href="https://anime.stackexchange.com/questions/tagged/anime-production" class="post-tag" title="show questions tagged &#39;anime-production&#39;" rel="tag">anime-production</a></strong> (and remove from the VN question).</s> <a href="/questions/tagged/status-complete" class="post-tag" title="show questions tagged &#39;status-complete&#39;" rel="tag">status-complete</a></li>
<li><a href="https://anime.stackexchange.com/questions/tagged/anime-physics" class="post-tag" title="show questions tagged &#39;anime-physics&#39;" rel="tag">anime-physics</a> is a borderline case. I don't see much reason to keep it, but I also don't see much reason to get rid of it. I'll <strong>abstain</strong> on this one.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/music" class="post-tag" title="show questions tagged &#39;music&#39;" rel="tag">music</a> can probably stay. The only question is whether <a href="https://anime.stackexchange.com/questions/tagged/music" class="post-tag" title="show questions tagged &#39;music&#39;" rel="tag">music</a> and <a href="https://anime.stackexchange.com/questions/tagged/theme-song" class="post-tag" title="show questions tagged &#39;theme-song&#39;" rel="tag">theme-song</a> are different enough to warrant having two separate tags. However, of the 4 questions tagged with <a href="https://anime.stackexchange.com/questions/tagged/theme-song" class="post-tag" title="show questions tagged &#39;theme-song&#39;" rel="tag">theme-song</a>, 3 of them aren't solely about the music from the song, so I say <strong>keep both tags</strong>.</li>
<li><s><a href="https://anime.stackexchange.com/questions/tagged/technology" class="post-tag" title="show questions tagged &#39;technology&#39;" rel="tag">technology</a> is a strange one. The wiki description says it's to be used both for real-world technology and in-universe technology, which obviously are very different things. I say we <strong>make it only for in-universe technology</strong>. If there are any real-world technology questions which are on topic on this site, we should make a separate tag for them, but if not then we can get rid of it. I'm not really opposed to getting rid of the tag entirely either, but I'll abstain on that point.</s> <a href="/questions/tagged/status-complete" class="post-tag" title="show questions tagged &#39;status-complete&#39;" rel="tag">status-complete</a> Changed tag wiki to reflect that.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/voice-acting" class="post-tag" title="show questions tagged &#39;voice-acting&#39;" rel="tag">voice-acting</a> seems fine to me. <strong>Keep</strong>.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/retag" class="post-tag" title="show questions tagged &#39;retag&#39;" rel="tag">retag</a> probably should be discussed on it's own meta post, but for now I say <strong>keep</strong>.</li>
<li><s><a href="https://anime.stackexchange.com/questions/tagged/season" class="post-tag" title="show questions tagged &#39;season&#39;" rel="tag">season</a> No need for this. <strong>Burninate</strong>.</s> <a href="/questions/tagged/status-complete" class="post-tag" title="show questions tagged &#39;status-complete&#39;" rel="tag">status-complete</a></li>
<li><s><a href="https://anime.stackexchange.com/questions/tagged/prequel" class="post-tag" title="show questions tagged &#39;prequel&#39;" rel="tag">prequel</a> I don't see what this is good for. <strong>Destroy</strong></s> <a href="/questions/tagged/status-complete" class="post-tag" title="show questions tagged &#39;status-complete&#39;" rel="tag">status-complete</a></li>
<li><s><a href="https://anime.stackexchange.com/questions/tagged/origin" class="post-tag" title="show questions tagged &#39;origin&#39;" rel="tag">origin</a> <strong>Merge with <a href="https://anime.stackexchange.com/questions/tagged/anime-history" class="post-tag" title="show questions tagged &#39;anime-history&#39;" rel="tag">anime-history</a></strong></s> <a href="/questions/tagged/status-complete" class="post-tag" title="show questions tagged &#39;status-complete&#39;" rel="tag">status-complete</a></li>
<li><a href="https://anime.stackexchange.com/questions/tagged/sound-effects" class="post-tag" title="show questions tagged &#39;sound-effects&#39;" rel="tag">sound-effects</a> The single question tagged with this would be better tagged with <a href="https://anime.stackexchange.com/questions/tagged/japanese-language" class="post-tag" title="show questions tagged &#39;japanese-language&#39;" rel="tag">japanese-language</a>. In principle I think this tag might be okay, though I suspect it would be a subtag of <a href="https://anime.stackexchange.com/questions/tagged/tropes" class="post-tag" title="show questions tagged &#39;tropes&#39;" rel="tag">tropes</a>.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/meme" class="post-tag" title="show questions tagged &#39;meme&#39;" rel="tag">meme</a> isn't quite the same as any other tags we have, and it's not prone to misuse. We probably won't get many questions on it, but for now I say <strong>keep</strong>.</li>
<li><s><a href="https://anime.stackexchange.com/questions/tagged/mistranslation" class="post-tag" title="show questions tagged &#39;mistranslation&#39;" rel="tag">mistranslation</a> <strong>Merge with <a href="https://anime.stackexchange.com/questions/tagged/japanese-language" class="post-tag" title="show questions tagged &#39;japanese-language&#39;" rel="tag">japanese-language</a></strong></s> <a href="/questions/tagged/status-complete" class="post-tag" title="show questions tagged &#39;status-complete&#39;" rel="tag">status-complete</a> - Note that no synonym was made.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/fillers" class="post-tag" title="show questions tagged &#39;fillers&#39;" rel="tag">fillers</a> I have no opinion on this. <strong>Abstain</strong>.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/light-novel" class="post-tag" title="show questions tagged &#39;light-novel&#39;" rel="tag">light-novel</a> It's questionable whether this is necessary. In my opinion this should be discussed at <a href="https://anime.meta.stackexchange.com/questions/275/add-light-novel-to-tag-blacklist">Add &quot;light-novel&quot; to tag blacklist</a> rather than here.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/live-action" class="post-tag" title="show questions tagged &#39;live-action&#39;" rel="tag">live-action</a> is similar to <a href="https://anime.stackexchange.com/questions/tagged/light-novel" class="post-tag" title="show questions tagged &#39;light-novel&#39;" rel="tag">light-novel</a>. It should be discussed individually on a separate post.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/manga-history" class="post-tag" title="show questions tagged &#39;manga-history&#39;" rel="tag">manga-history</a> I propose that we <strong>merge this, <a href="https://anime.stackexchange.com/questions/tagged/anime-history" class="post-tag" title="show questions tagged &#39;anime-history&#39;" rel="tag">anime-history</a>, and <a href="https://anime.stackexchange.com/questions/tagged/game-history" class="post-tag" title="show questions tagged &#39;game-history&#39;" rel="tag">game-history</a> into a broad <a href="https://anime.stackexchange.com/questions/tagged/history" class="post-tag" title="show questions tagged &#39;history&#39;" rel="tag">history</a> tag</strong>. There isn't too much potential for misuse of such a tag, and there isn't much difference in the scope of these tags.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/currently-airing" class="post-tag" title="show questions tagged &#39;currently-airing&#39;" rel="tag">currently-airing</a> <strong>Kill</strong>. Too prone to misuse, and there aren't many other questions that can be asked about this. The one question with this tag should be retagged, but none of the existing tags works. I suggest <a href="https://anime.stackexchange.com/questions/tagged/anime-resources" class="post-tag" title="show questions tagged &#39;anime-resources&#39;" rel="tag">anime-resources</a> for these sorts of questions. That, or we could move it to meta as an FAQ question.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/doujinshi" class="post-tag" title="show questions tagged &#39;doujinshi&#39;" rel="tag">doujinshi</a> Again similar to <a href="https://anime.stackexchange.com/questions/tagged/light-novel" class="post-tag" title="show questions tagged &#39;light-novel&#39;" rel="tag">light-novel</a>. This should get it's own meta post.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/fillers" class="post-tag" title="show questions tagged &#39;fillers&#39;" rel="tag">fillers</a> I'll <strong>abstain</strong>, though I lean towards getting rid of it slightly.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/game-history" class="post-tag" title="show questions tagged &#39;game-history&#39;" rel="tag">game-history</a> see above.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/censorship" class="post-tag" title="show questions tagged &#39;censorship&#39;" rel="tag">censorship</a> is probably okay, though it's almost a subtag of <a href="https://anime.stackexchange.com/questions/tagged/anime-production" class="post-tag" title="show questions tagged &#39;anime-production&#39;" rel="tag">anime-production</a>. <strong>keep</strong></li>
<li><a href="https://anime.stackexchange.com/questions/tagged/conventions" class="post-tag" title="show questions tagged &#39;conventions&#39;" rel="tag">conventions</a> My trouble with this is, are there any on-topic questions about conventions? <strong>If there are, we can keep it. If not, we should get rid of it</strong>. The only currently tagged question is closed, though it might be a candidate for reopening.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/copyright" class="post-tag" title="show questions tagged &#39;copyright&#39;" rel="tag">copyright</a> seems fairly broadly off-topic. There are a few questions one can ask about copyright that are on-topic here, but I think it's few enough that we don't need a tag for it. Leaning towards <strong>kill</strong>, though I'm a bit iffy on this one.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/crossovers" class="post-tag" title="show questions tagged &#39;crossovers&#39;" rel="tag">crossovers</a> I see no problem with this one, except that a couple of questions that could be tagged with this aren't. <strong>Keep</strong>.</li>
<li><a href="https://anime.stackexchange.com/questions/tagged/amv" class="post-tag" title="show questions tagged &#39;amv&#39;" rel="tag">amv</a> AMVs usually refers to fan productions which are not official. I think they are almost entirely off-topic here. It can very rarely refer to officially produced AMVs by studios, but that is not the norm. As such, I say <strong>kill</strong>.</li>
<li><s><a href="https://anime.stackexchange.com/questions/tagged/analysis" class="post-tag" title="show questions tagged &#39;analysis&#39;" rel="tag">analysis</a> seems to have been added in the early days, perhaps from <a href="https://movies.stackexchange.com/">Movies &amp; TV</a> where it is a common tag. However, I think there is no need for it here. <strong>Kill</strong>.</s> <a href="/questions/tagged/status-complete" class="post-tag" title="show questions tagged &#39;status-complete&#39;" rel="tag">status-complete</a></li>
<li><a href="https://anime.stackexchange.com/questions/tagged/animation-mistakes" class="post-tag" title="show questions tagged &#39;animation-mistakes&#39;" rel="tag">animation-mistakes</a> I guess I'm okay with. <strong>Keep</strong>.</li>
</ul>

<hr>

<p>Since this is a very long post and most of the disagreement is likely to be over a small number of tags, I'd suggest voicing any disagreement as a separate answer rather than a comment here so that it can be properly voted on.</p>
