Say, while wondering through my Fleet's holding recently with a new character, I found a number of services missing and a couple of clean up items that could be addressed. I've listed them below. And I'm sure other folks can add a few to the list.
Fleet Starbase: there is no Exchange access anywhere on the station. (Both Fed and Klingon bases)
K-13: There is no one to sell items to. It is also missing a Bartender. Two problems solved with the inclusion of one. ;P Also the removal of the officer who sits at the Bank/Mail/Exchange console would be nice - as he/she is ALWAYS stuck in the floor graphically.