Personally I’d find is pretty useful but it does depend on the user.

A Post Flair system would be great, specially for keeping things organized in a community that also serves support issues, for example having preset tags for “Issue”, “Bug”, “Solved”, “Discussion”, “Announcement”…

These help keep posts organized and helps filtering for users that come later.

What we have to do now is use [TAGS/LIKE/THIS] and use external Userscripts that add the ability to filter those, which isn’t ideal.