You may be working on some of these already, though some might be new.
• Add an 'unresolved' button to questions. The asker, mods and editors can do this to mark a question 'unresolved' in the questions list. This is particularly for the Battle Subway.
• I think this has been brought up a couple of times now, but we really do need a user search mechanism on the users pages, for various reasons, mainly looking up users who you will never find in pages 7 and further on or finding users to ban.
• The ability to make ourselves idle on chat. I think this has been suggested before, sounds familiar.
• You are working on this, I presume, but the Itemdex would be cool.
• My other stuff is here for a quick link: http://Pokemondb.net/pokebase/meta/user-activity/questions/Fizzcube
• Your ideas XD
So yeah. Hadn't posted any suggestions in a while though I might as well. :D