I think that, especially with the introduction of aircraft, there should be some kind of stationary AA/AT/Anti Inf turret. Something like a fixed Arty turret mounted on a turntable. I was thinking something upon the lines of this: Mounted on a turnatble with up/down movement and a chain-gun / repeating heavy mounted on it. There would probably be some balance issues so it would have to have a slow(ish) rate of fire and be fairly easy to take down.
Maybe a partial dome (read: umbrella) over it that has insane armor so that aircraft couldn't take it out but ground units could with ease.
make ML turrets (perhaps only lvl3? ) easier to hit from tanks and that's all that's needed. There will be an AA turret/placement.
Related AA question: Do you think a grenadier's guided missile could be good at anti-aircraft? ***Side suggestion*** Add a locking system for rpg to aircrafts but not too overpowered.
