Yeah, we could leave the ship and walk like in a FPS.
Then we could have missions where we would need to kill aliens in a planet. So we could also collect new weapons, and you could change them by pressing 1-9. Also, we have to make sure the aliens look the same. Those missions will need to take months to finish, and they will keep you doing the same thing over and over and over (i.e , kill stupid aliens). Then we could also have a "Deathmatch option" where the pilots could just kill each other, and the one with most kills after the time is the winner.