This is more directed towards the players, not so much the devs....
Can the players be more sensible to the air defense part of the game?
Like today on Siege of Tobruk, I had a brilliant idea if many players could use everything they had and throw it on the Stukas. The Breda AA, Brens, Lewis MG placements, Rifles, Tommy guns, Vickers...
Or at least have a dedicated AA squad in the team, organized about shooting down planes and stuff.