Someone will probably close this as having already been discussed and dropped, but I will propose it anyway.
It seems that one can now use some tags (the most used, presumably) for filtering the close queue.
I would still like to be able to actually filter (actively, by choosing any tags) all review queues.
FWIW, I gave up reviewing at S.O. because the reviewing that I really feel like doing involves content that I know something about. (;-))
Yes, I know that there are plenty of posts that could use some reviewing & fixing independently of their technical content. But I prefer to concentrate on areas I am interested in and maybe know something about. So I generally stick to reviewing posts on smaller sites that are limited to such areas. Mea culpa.
Too bad, because there are no doubt posts on S.O. that hit my preferred areas, and that I might be able to help with. So let me ask the question, as I have not seen a good answer, so far (no doubt someone will point me to a long discussion about this with good answers; apologies for not being able to find it myself):
Why can't we filter review-queue posts?
In particular, why can't we use tags to filter them?
On S.O., why preselect particular tags for this purpose, even if they are the most used in the posts to be reviewed? Why not let users choose the tags?
I'm guessing that the reasoning is that you want to attack review queue size in general, and you are afraid that if reviewers stick to their favorite tags then less stuff will get reviewed overall. Is that it?
If so, I'm not so sure about that last part. The pool of "reviewers" is not static. Giving users a choice might just mean that some users (like me) who are not crazy about spending hours trying to put a dent in review queues for areas that they don't care much about will in fact become active reviewers for areas that they do care about.
Think about it this way: Give users the choice of whether they want to review generally, regardless of subject matter and their knowledge of it. Some will choose to review, review, review anything and everything they can get their hands on. I'm not sure that fewer will do that if you offer it as a choice instead of imposing it as the only reviewing possibility. Others will dip into reviewing where they think they know something about the content. Surely, content is important, even if form etc. are also important.
This problem (if it is a problem) would probably not exist if S.O. were split into umpteen little sites for particular interest areas. But it does exist (I think), because S.O. is a monster (a good monster, but a monster). I use S.O., but only by filtering it, typically using tags. You would have one more reviewer if I could filter also (e.g., using tags) for reviewing.