I wish for big, stupid hats.
Granted, the "Muskasneer" can be upgraded with peacock's feathers (the precise effect of this has to be found out by ingame experimentation), grants you a 20% price increase at all shops and can only be removed with the help of omi-gel. It stays on in all cut-scenes including romance scenes where it will sometimes merge with the head of your LI (the "advanced graphics DLC" will allow you to configure which one will be rendered on a higher layer). It makes all elcor you try to talk to cry for 10 seconds, but nobody else including your LI or enemies trash-talking you will ever have anything to say about it.
Equipping your whole squad with it unlocks the "greatest hats parade" quest, which is a PvP beauty contest in Val Royeaux.
I wish for a "hold position" command that makes my squad members stay in a position, not starting to following me when I run off or phasing in to me, unless told otherwise or until I leave the level. Setting up a sniper and lure enemies in sight, yeah!