Can AH2 be set up so that ALL of the defensive guns at airfields/CVs/towns etc are controlled by an AI until somebody jumps into them? There are a lot of people that enjoy just sitting in ground based ack and plinking away at enemy planes (sometimes 3 per field just isn't enough). I'm also a believer that even if a player isn't manning a particular gun, it shouldn't still provide some defense.
Summary:
ALL guns should be mannable
ALL defensive guns should be controlled by AI when unmanned