user2604: I just noticed that two of the four questions in live-action are about specific live-action productions:

https://anime.stackexchange.com/q/33750/2604
How much of the manga does the Death Note musical cover?

Is this (using live-action to designate that the adaptation is live-action, rather than asking about the process of live-action productions) correct tag usage? In my mind, this is equivalent to appending manga to questions about the EVA manga, the FMA manga, etc., and thus probably not very useful. (I can see the use for fullmetal-alchemist-manga in addition to fullmetal-alchemist, but the fact that the additional tag is specific to the franchise makes filtering questions easier and also removes the search engine visibility problem parallel to the one mentioned here.)
I also tried looking at the tag descriptions, but alas, there weren't any comments on tag usage there.

user1530: I believe we need to deprecate this tag, as like in the question you linked - it's too general to be of much use.
Currently we have a policy to split up larger series into appropiate subseries, but live-action versions are potentially too niche.
There are two questions there that do not have a 'master' series tag though, I propose that we have a live-action-production tag similar to anime-production and manga-production to discuss specific questions.
There is a similar policy with anime-history, in which there is a light-novel-history post which is also specific.

2604: <p>I just noticed that two of the four questions in <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> are about specific live-action productions:</p>

<ul>
<li><a href="https://anime.stackexchange.com/q/33750/2604">https://anime.stackexchange.com/q/33750/2604</a></li>
<li><a href="https://anime.stackexchange.com/q/22942/2604">How much of the manga does the Death Note musical cover?</a></li>
</ul>

<p>Is this (using <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> to designate that the adaptation is live-action, rather than asking about the process of live-action productions) correct tag usage? In my mind, this is equivalent to appending <a href="https://anime.stackexchange.com/questions/tagged/manga" class="post-tag" title="show questions tagged &#39;manga&#39;" rel="tag">manga</a> to questions about the EVA manga, the FMA manga, etc., and thus probably not very useful. (I <em>can</em> see the use for <a href="https://anime.stackexchange.com/questions/tagged/fullmetal-alchemist-manga" class="post-tag" title="show questions tagged &#39;fullmetal-alchemist-manga&#39;" rel="tag">fullmetal-alchemist-manga</a> in addition to <a href="https://anime.stackexchange.com/questions/tagged/fullmetal-alchemist" class="post-tag" title="show questions tagged &#39;fullmetal-alchemist&#39;" rel="tag">fullmetal-alchemist</a>, but the fact that the additional tag is specific to the franchise makes filtering questions easier and also removes the search engine visibility problem parallel to the one mentioned <a href="https://anime.meta.stackexchange.com/a/2432/2604">here</a>.)</p>

<p>I also tried looking at the tag descriptions, but alas, there weren't any comments on tag usage there.</p>
 1530: <p>I believe we need to deprecate this tag, as like in the <a href="https://anime.meta.stackexchange.com/questions/2427/should-we-allow-genre-meta-tags?lq=1">question you linked</a> - it's too general to be of much use.</p>

<p>Currently we have a <a href="https://anime.meta.stackexchange.com/questions/2690/policy-review-tagging-separate-continuities">policy</a> to split up larger series into appropiate subseries, but live-action versions are potentially too niche.</p>

<p>There are two questions there that do not have a 'master' series tag though, I propose that we have a <a href="https://anime.stackexchange.com/questions/tagged/live-action-production" class="post-tag" title="show questions tagged &#39;live-action-production&#39;" rel="tag">live-action-production</a> tag similar to <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> to discuss specific questions.</p>

<p>There is a similar policy 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>, in which there is a <a href="https://anime.stackexchange.com/questions/tagged/light-novel-history" class="post-tag" title="show questions tagged &#39;light-novel-history&#39;" rel="tag">light-novel-history</a> post which is also specific.</p>
