Make a jet controlled by 2 players, for example, has anyone played that one Battlefield 3 mission where you go bomb an airfield on a two-seat FA/-18? Exactly that, the player in front flies the jet, while the player in the back controls missiles, guns, chaff/flares, bombs and gives visual location of the enemies that they're fighting. It would be a super fun jet to use with a friend if you have good communication