I'd have to agree that USF does feel very gimmicky, stale play isn't really an argument. Its always the case, I mean back in the day of CoH1, the most common opening for USF was 4 rifles. The difference however, between a lvl 6-8 player and lvl 12-15 player was the kind of defences he faced and the kind of things you could do with rifles.
Of course, IMO rifles should be fixed, I want vet 3 rifles to be amazing again 
Well yes, of course you're going to get a couple riflemen at the no matter what faction, but in CoH1, if you wanted to, you could get snipers, MGs, mortars immediately after the riflemen and use them to support them (barracks and support weapons center both costed 15 fuel).
In CoH2, it takes at least a couple minutes until you start teching and nobody uses MGs because lieutenant is garbage.
And USF is so predictable, you can't start with anything else besides riflemen, everybody goes captain for AT, because lieutenant only has early game units (AA halftrack is too expensive at 70 fuel). MGs should really be in the HQ.