How much more nimble do hey need to be? They have computer controlled flight controls because the plane itself is inherently unstable, which makes them perfect for doing things a normal plane can't. The Taliban and AlQaida have no air force, so I don't know what they would need to get away from, other than RPGs and SAMs.
It would be nice if the opponent would fight a conventional war. That alone would significantly shorten the battle. Not gonna happen, though.