I think if balance team incentivising special OPS or new commander deploy AA HQ,they should give something more powerful unit in T4,like Sturmpanzer IV.
Just see Sovite commander who have is-2,one of them got KV8,another got T34-85,and IR44 only for ober,and ober must training in T4,did Ober can use they IR44 give damage to any tank or push enemy infantry back?
IR44 is powerful weapon,but it is one commader ability is tooooooo waste
I think weapon upgrade commander abilities are not balanced right now. Some are much better than others.
Good ones are:
M1919, at least 4 squads can equip M1919 (3 RM + 1 Officer)
PPSh, players usually build 3 squads of Cons if they choose a doctrine with PPSh
Bads ones are:
IR STG44, it is unrealistic to have more than 2 squads of Obers on the field.
All flamethrowers for engineers (RE and Sappers), since players only need 1 squad of engineer with flamethrower.