Consider the fundamental concept of the A-10 with the big gun and high survivability combined with drone technology.
Exactly what I keep screaming. Army in particular wants A10s to stay around (not sure about the Marines, but I can't imagine they'd have a problem with it), so why not adapt the A10 airframe/capabilities to a drone and make it an organic CAB battalion? Then the USAF gets to dump the icky CAS platform and we ground-pounders get to keep one of the most effective tools in the arsenal AND have it under our control.