True. But, how would you want to handle the situation of two equally competent(at least in the eyes of the employer) co-pilots vying for control? should it always go to one? always go to the other? have a switch controlled? controlled by whom? not easy questions if you ask me.

edit: I actually can't think of a good way to do that other than have a manual switch on the console that would switch between the two controls. anything else seems amazingly bad.