Not much, actually.
These systems are good for single-mission aircraft, where we dont care much whether or not the aircraft comes back. When decisions and adjustments need to me made during a mission, you really need a man in the cockpit. Air to Air Combat will likely always require a man, because you could probably never duplicate SA (Situational Awareness) with a computer.
Besides, who would ever join the Navy, except for the opportunity to fly a hot-rod? I sure as hell didnt sign up for the food and benefits.