Word for word literally everything you just said can be applied to American Rifles. In fact let me try that.
"It is almost impossible to have a combined arms tactic earl - early mid game. Rifles are the most versatile and reliable infantry in the game that act both as AI and AT. USF player does not need anything else but to wait for Sherman or Easy-Eight. USF has a terrible design and I think it's killing Coh2 player base."
Hm, that seems pretty congruent.
Well, I can call in Dodge truck for my early game harassment. I can call in Assault engineers and pathfinders. I can use my Paratroopers, captain and Stuart combo. I can aim for lieutenant and get out a scout cars and mg all the while OKW has build are Volks and upgraded with shreks (mid game).