The AA nerf against infantry seems taken as my opinion and experience from 1vs1 games:
is unnecessary, it's already a one hit thing for many squads, the bigger ones take almost full panic damage. Forest fights have, and it seems will be, TNT & Gebalte Ladung, flamethrower showdowns. The main problem I have with it though is that it's almost impossible to dodge, even if you micro your units out they will take serious damage. Realistic? Maybe. Rewarding to skilled players? No.
Another thing about NKVD and Feldgendarmerie, if I grasp it correctly they just prevent surrenders and render no veterancy buffs? It will be interesting to see if people forgo a whole card of infantry for these dudes, might be viable for inf. divisions.
The AA nerf against infantry seems to be uncessesary as well. AA vehicles are soft skinned, usually taken out by a single PTRD