have Revan as a PC able to chose gender
Have Bastila and the gang as party members
Have the ebon hawk
make the game longer than the others. More planets more dialogs
be able to have more than 2 people accompany you on your mission
be able to have romance with any of your party members except droids of course no matter what gender you are.
not do what I have said
have the exile in it as I didn't like sith lords
I shall think of more....