user7579: Update:
Since the reaction to this idea seemed pretty lukewarm, I've decided not to move ahead with this. If someone else wants to build an event on this idea, feel free to do so.

This is a conspiracy to get some good questions and answers in less-trafficked tags. 
If the response to this proposal seems positive, I'll move ahead with implementation in a week or so.
Proposal
We should form viewing circles—groups of users who are all following the same series at the same time. Hopefully, this will mean that when people ask questions about the series, other users who are also following the series will be able to answer them. The circle doesn't have to stay in lockstep; it's okay if you slip back by a few episodes, and it's also okay if you end up way ahead. 
This proposal comes from several frustrating experiences I've had. The naruto and one-piece tags never seem to lack for questions or answers, but it's a real crapshoot in other tags, especially when it comes to currently airing or less popular shows. If you ask a question about a show that no one else is following, you either get no answers or you get overly general answers from people who haven't seen the show and are guessing based on tropes. Conversely, a lot of people won't even look at a question if it concerns a series they aren't following. So decent posts languish with few upvotes, and the users who write these posts get discouraged and seem to either give up and leave or spend a bunch of time in the review queues closing id requests. It's just a bad experience all around. While this is somewhat unavoidable, there's a lot we can do to improve it, and this proposal is one idea I came up with to do so.
Also, a lot of people mentioned that they discovered new series by reading id requests. Now that id requests are gone, this could be a good way to discover something new.
Process
If this idea hits off, we can do it maybe once per season. You can also do manga; I don't think we really need to separate out manga.
Here's how we can form circles:

Someone (probably me) will create a meta post to form circles.
Everyone should write answers mentioning the series you want to form a circle around. It can be a single series, or it can be a franchise (e.g. all the Fate shows), or a small set of shows around some kind of theme (e.g. shows inspired by Eva, shows based on Key visual novels, manga by Shirow Masamune, the films of Satoshi Kon). If you're doing multiple shows, you should mention the viewing order you'd like to follow so things can stay in synch. It would also be nice to mention where someone can watch the series (legally, of course), and whether it's been completely released or is currently simulcasting.
We should all upvote answers that mention series we're interested in following.
You can commit to a circle by leaving a comment saying "I'm committing to this circle". It's not official, but it's nice for the person who created the circle to know that others are interested in committing. You can also make suggestions or request clarification before committing.
People are inevitably going to drop out as life happens (or as the show starts to suck), so large groups are probably better. I would encourage everyone to commit to popular, highly upvoted circles so the circle can survive these inevitable dropouts.
For the same reason, we should all join several circles, not just one or two. That way if you can't stand to watch a show anymore, you can drop it, but still be involved with other circles.
It's completely valid to join a circle watching a series you've already seen, if you'd like to rewatch it and maybe answer some newbie questions with your deeper perspective on the series. You can also possibly join a circle if you've seen the series and aren't going to rewatch it, just to assure everyone that there are experts on that series around the site.
It's also perfectly okay to "join" a circle long after it's been formed and started watching the series—you know that other users on the site have seen the show, so you can ask questions with some confidence that there are experts around. And there might also be questions from the initial viewing still hanging around without good answers, that you can provide an answer for.

I prefer to do this on Meta rather than chat. Not all of us go to chat, and not everyone who might be interested in a circle is going to be on chat at the same time. Plus, doing it on Meta lets interested people vet the suggested circles to make sure someone else is actually interested in joining. 
Please leave comments, questions, and suggestions here. If people seem interested, I'll create another post where we can actually form circles.

user8486: Re: Proposal
I share your sentiment, but by forming viewing circles, this only increases the chance of the followed series getting more timely answers and votes to questions asked around the time the viewing circles are watching them, which may draw in more traffic and interest to the main site if they are currently airing shows. I don't know if it would encourage people to ask more questions about less popular shows, though.
Personally, before I start watching any completed series, I try to search the main site by tag name and see what questions there are and remind myself to look for/record the answers when viewing so I could go back and give my input when I am done with the series. This way, I can provide more complete answers and also spot and possibly correct the posts that seriously spoil the content without warning (I don't mind spoilers most of the time). And of course I also vote on the questions and answers, if any.
Re: Process
How do you co-ordinate this efficiently? And if you encourage people to commit to large, popular circles, how would it be different from the status quo? If it's informal and the purpose is just to have fun, then sure it doesn't matter. If that's the case, I would still prefer it to be an event attached to a chatroom because as a certain Tomato said, chat is a somewhat better platform for this purpose.
Positive aspects
I think your proposal is workable if it's only restricted to currently airing shows. Otherwise you have too many options for less impact. We should arrange the viewing sessions at the earliest time possible: as close to the release time of the latest episode as possible.
For less popular, non-airing shows, I think bounty offers is still the best method to attract answers. If we continue what senshin did, grouping each bounty offer by theme (e.g. Studio Ghibli's films), it will also serve the purpose of introducing anime to members who could filter by genre/theme if they so choose, and these anime grouped by themes might also require the same/similar area of expertise to come up with questions/answers, and having seen one might benefit knowledge of another.

user63: In addition to circles, I would like to propose a mutual contract (with possible bounty) system. Which basically is an agreement, by two (or more) users, where one party (the contractor) picks an anime of their choosing that they want someone else (the contracted) to watch, and the other party (the contractor) agrees to watch in exchange they watch an anime of their (the contracted) choosing. 
The two parties may set some conditions, like the minimum number of episodes/seasons, how long they have to finish it and what they need to do in order to establish that they've finished a series. Typically, these contracts should follow the Law of Equivalent Exchange. Rep bounties may be offered as compensation. Additionally, you may ask the other party to ask (and self-answer) a question for additional bounty (inspired by @senshin previous bounties for tags event).
You can fulfill these contracts on your own or as a group. I will offer to stream any series available on Crunchyroll or Funimation via Rabb.it (no region restrictions) for any individuals and circles, as long as they set a schedule ahead of time. 

7579: <p><strong>Update:
Since the reaction to this idea seemed pretty lukewarm, I've decided not to move ahead with this. If someone else wants to build an event on this idea, feel free to do so.</strong></p>

<hr>

<p>This is a conspiracy to get some good questions and answers in less-trafficked tags. </p>

<p>If the response to this proposal seems positive, I'll move ahead with implementation in a week or so.</p>

<h1>Proposal</h1>

<p>We should form viewing circles—groups of users who are all following the same series at the same time. Hopefully, this will mean that when people ask questions about the series, other users who are also following the series will be able to answer them. The circle doesn't have to stay in lockstep; it's okay if you slip back by a few episodes, and it's also okay if you end up way ahead. </p>

<p>This proposal comes from several frustrating experiences I've had. The <a href="https://anime.stackexchange.com/questions/tagged/naruto" class="post-tag" title="show questions tagged &#39;naruto&#39;" rel="tag">naruto</a> and <a href="https://anime.stackexchange.com/questions/tagged/one-piece" class="post-tag" title="show questions tagged &#39;one-piece&#39;" rel="tag">one-piece</a> tags never seem to lack for questions or answers, but it's a real crapshoot in other tags, especially when it comes to currently airing or less popular shows. If you ask a question about a show that no one else is following, you either get no answers or you get overly general answers from people who haven't seen the show and are guessing based on tropes. Conversely, a lot of people won't even look at a question if it concerns a series they aren't following. So decent posts languish with few upvotes, and the users who write these posts get discouraged and seem to either give up and leave or spend a bunch of time in the review queues closing id requests. It's just a bad experience all around. While this is somewhat unavoidable, there's a <em>lot</em> we can do to improve it, and this proposal is one idea I came up with to do so.</p>

<p>Also, a lot of people mentioned that they discovered new series by reading id requests. Now that id requests are gone, this could be a good way to discover something new.</p>

<h1>Process</h1>

<p>If this idea hits off, we can do it maybe once per season. You can also do manga; I don't think we really need to separate out manga.</p>

<p>Here's how we can form circles:</p>

<ul>
<li>Someone (probably me) will create a meta post to form circles.</li>
<li>Everyone should write answers mentioning the series you want to form a circle around. It can be a single series, or it can be a franchise (e.g. all the Fate shows), or a small set of shows around some kind of theme (e.g. shows inspired by Eva, shows based on Key visual novels, manga by Shirow Masamune, the films of Satoshi Kon). If you're doing multiple shows, you should mention the viewing order you'd like to follow so things can stay in synch. It would also be nice to mention where someone can watch the series (legally, of course), and whether it's been completely released or is currently simulcasting.</li>
<li>We should all upvote answers that mention series we're interested in following.</li>
<li>You can commit to a circle by leaving a comment saying "I'm committing to this circle". It's not official, but it's nice for the person who created the circle to know that others are interested in committing. You can also make suggestions or request clarification before committing.</li>
<li>People are inevitably going to drop out as life happens (or as the show starts to suck), so large groups are probably better. I would encourage everyone to commit to popular, highly upvoted circles so the circle can survive these inevitable dropouts.</li>
<li>For the same reason, we should all join several circles, not just one or two. That way if you can't stand to watch a show anymore, you can drop it, but still be involved with other circles.</li>
<li>It's completely valid to join a circle watching a series you've already seen, if you'd like to rewatch it and maybe answer some newbie questions with your deeper perspective on the series. You can also possibly join a circle if you've seen the series and aren't going to rewatch it, just to assure everyone that there are experts on that series around the site.</li>
<li>It's also perfectly okay to "join" a circle long after it's been formed and started watching the series—you know that other users on the site have seen the show, so you can ask questions with some confidence that there are experts around. And there might also be questions from the initial viewing still hanging around without good answers, that you can provide an answer for.</li>
</ul>

<p>I prefer to do this on Meta rather than chat. Not all of us go to chat, and not everyone who might be interested in a circle is going to be on chat at the same time. Plus, doing it on Meta lets interested people vet the suggested circles to make sure someone else is actually interested in joining. </p>

<p>Please leave comments, questions, and suggestions here. If people seem interested, I'll create another post where we can actually form circles.</p>
 8486: <h2>Re: Proposal</h2>

<p>I share your sentiment, but by forming viewing circles, this only increases the chance of the followed series getting more timely answers and votes to questions asked around the time the viewing circles are watching them, which may draw in more traffic and interest to the main site if they are currently airing shows. I don't know if it would encourage people to ask more questions about less popular shows, though.</p>

<p>Personally, before I start watching any completed series, I try to search the main site by tag name and see what questions there are and remind myself to look for/record the answers when viewing so I could go back and give my input when I am done with the series. This way, I can provide more complete answers and also spot and possibly correct the posts that seriously spoil the content without warning (I don't mind spoilers most of the time). And of course I also vote on the questions and answers, if any.</p>

<h2>Re: Process</h2>

<p>How do you co-ordinate this efficiently? And if you encourage people to commit to large, popular circles, how would it be different from the status quo? If it's informal and the purpose is just to have fun, then sure it doesn't matter. If that's the case, I would still prefer it to be an event attached to a chatroom because as a certain Tomato said, chat is a somewhat better platform for this purpose.</p>

<h2>Positive aspects</h2>

<p>I think your proposal is workable if it's only restricted to currently airing shows. Otherwise you have too many options for less impact. We should arrange the viewing sessions at the earliest time possible: as close to the release time of the latest episode as possible.</p>

<p>For less popular, non-airing shows, I think bounty offers is still the best method to attract answers. If we continue what senshin did, grouping each bounty offer by theme (e.g. Studio Ghibli's films), it will also serve the purpose of introducing anime to members who could filter by genre/theme if they so choose, and these anime grouped by themes might also require the same/similar area of expertise to come up with questions/answers, and having seen one might benefit knowledge of another.</p>
 63: <p>In addition to circles, I would like to propose a mutual contract (with possible bounty) system. Which basically is an agreement, by two (or more) users, where one party (the contractor) picks an anime of their choosing that they want someone else (the contracted) to watch, and the other party (the contractor) agrees to watch in exchange they watch an anime of their (the contracted) choosing. </p>

<p>The two parties may set some conditions, like the minimum number of episodes/seasons, how long they have to finish it and what they need to do in order to establish that they've finished a series. Typically, these contracts should follow the Law of Equivalent Exchange. Rep bounties may be offered as compensation. Additionally, you may ask the other party to ask (and self-answer) a question for additional bounty (inspired by @senshin previous bounties for tags event).</p>

<p>You can fulfill these contracts on your own or as a group. I will offer to stream any series available on Crunchyroll or Funimation via Rabb.it (no region restrictions) for any individuals and circles, as long as they set a schedule ahead of time. </p>
