Just imagine you got 5 man pgrens with all kind of nades. I mean your opponent got that shit to deal with that. Impossible? That's how USF extacly works dude. People are complaining about "powerfull" infantry of OKW (in fact, 5th vet volks with stg still get losing to 3rd vet cons with ppsh pretty bad, as well as 3rd vet rifles) and obers come to late with most shitty start ever (without 2nd vet and higher, they are only suppose to fight with cons without any weapons upgrade. C'mon, something needs to be done in this state.
Every faction have some advantages (exept Ost, becose OKW do it all better, what OST have). Deal with it, this is not chess.
If the game benefit from the same infantry, no problem. Infantry may vary a color uniforms, but with same power. Shermans gets PzIV stats. E8 will be non-doc with Panther stats and price. Add some heavy USF TD with JagdTiger parametres.