These are some things I like to see. None of them are game breaking to me, and I love this game, but rather just a few quality of life things.
-Having /who <name> actually search for that name and not just bring up the area you are in with a list of everyone.
-Be able to rt-click->whisper everyone... only seems to work in some situations?
-I 2nd (1000nd) that the GTN needs to be updated some.
-When your companion returns from a mission it SHOULDN'T knock you out of the GTN because you are then just filling out all the fields again.
-I like city guards to have some functions on them (help me get to X).