I would love to see some function specific outfits. For example...
Spending some time mining in the caverns? Why not don my miner's helmet (with light) and a pair of overalls!
Honing your bureaucratic arts? Better put on that button down collar shirt with pocket protector and gray tie.
I think you get the idea.
AND, for making quick change outfit decisions (once outfits can be saved), would be nice to have an in-game button for changing outfits. Even if a page reload is needed, at least the button could make it happen in one action.