The only thing that will reduce clutter is a separate category “Feedback”. Buuuut, the problem is most topics eventually get derailed into complaining ( Godwin’s law ) so the reduction is more like -10% than -100%. In practice, this is just not worth the effort moderating it.
If you want to reduce clutter, the best ( that I have actually seen in use on a public forum ) is one or two curated sections of posts or links.
Example:
A “Beginners” category that contains locked, copies of useful posts for beginners. Since all posts are copies, people can still complain in the original posts but not the curated copies. Since all copies are locked, there are no replies six months later that derail into complaints. Since only moderators or staff can post copies, all posts are on topic. Since all posts are edit locked copies, the original poster cannot vandalize the post at a latter date out of frustration.
But MMOs are always changing and old posts become obsolete, especially when new features are added.
I have always wanted to try a “Hot Links” curated category, with just links to interesting topics or replies. Or maybe a “Link of the Day” curated category. Just some way to boost a topic or reply. By having a separate topic for each link, you could see what is interesting people.
However, I have never moderated a forum that was busy enough to warrant anything but a couple of global sticky posts like “Phones click here or HOT, Bugs, Search & FAQ” or “Known Requests - OFFICIAL RESPONSES (24)” or “Known Requests - RESOLVED (6-2)”.
Forums are just messy things because humans are messy. Forums that are neat, tend to be dead forums.
“Moderators are paid and praise and taxed in grief. The pay is too low and the taxes too high!”- Gryphonknight