I would like an engineer room, a bridge, a variety of bunks in different rooms so Cadets can be formed into squads if big enough, a recreational lounge, combat room, mess hall, security, storage, observation deck, medical room, armory, officer room, detention, zero gravity chamber, a simulation room (essentially just a box that simulates being in a fighter or something, people would just RP what happens or be sent to a large area with bots controlling the enemy. Doing the later is optional.)
And other things you see fit, of course.
Note: I would like event systems that just have interactive things, such as clicking on a vending machine will disperse an item or something. Notice that the outside overall does not need to be pretty, but if that is how you build then do so.