lets not forget that JA is a FPS/SaberWielder (new genre
not an RPG. I have nothing against the rpg genre and it'd like to see the edges blur a little. If were using the phantom mence as an example then it might work, the menu system could be walking around the JA. go to luke or kyle for missions, the pratice rooms for training missions and your room for save and loading etc but some might say thats getting way too much RPG elements in it.
It's all a matter of opinion
(RPG = Rocket Propelled Grenade