^Like in Halo or Call of Duty (weapons part)
Armor customization should make it for only you, it should not be a reskin for a whole class.
Possibly design your own model of armor.
Also a better HUD, customized for each character (Make a RC like HUD for Clones)
Possibly customizable weapons.
As I said above MAC!!! But I forgot to say Wii, they could use some new features that just came out for Wii.
Either in game map builder or an official application where you can make objects and then design the map (I don't know if the other versions of Battlefront have this due to having a MAC)