I would like to see dedicated air controllers in a upgrade, meaning that only they can call in a airstrike e. g. a Stuka divebomber. Kinda like in CM 1 where you have FO-teams to call in arty.
I have done a lot of playtesting in CMRT with Stuka divebombers and they attack their own forces almost every time they attack, especially SPWs seem to be great to attack .