Yes, pets. Come on, look at all the adorable stuff you guys have in here - Impostocubes, Snipes, assorted Gremlins that aren't those Darkfang Mender jerks...
C'mon, they don't even have to DO anything, just let us have a snipe, or an Impostocube, or something, that follows us around!
Seriously, if you put this in, my money will literally fly out of my pockets and launch itself at you at hyperspeed. Come on, Three Rings, make it happen. (I want a purple Snipe if you do. :) Maybe that little guy with the headband from the training hall.)
Pets as an addition to the game come up all the time, but I think this is the first thread that's suggested they be purely cosmetic from the get-go (which I'm in favour of if they're to be introduced at all - I've typed out my objections to gameplay-affecting pets too many times to ever want to do it again).