-Maneuvering at guns and mgs isnt that hard
I think you should tread carefully making statements like that. If it's so easy, you obviously have had no problem climbing the leaderboard then right? Are you in the top ten by now? I'd love to 1v1 so you can show me, I'll go USF and you will stomp me no problem.
As for the rest of your post, you make some decent points. USF does rely rather heavily on doctrinal features to remain viable in the mid to late game, and is quite munitions expensive as well. But I'd also argue that soviets suffer from the former, and ostheer from the latter.
I'm all for changes to USF to give them a fighting chance, but it's important to articulate that in a reasonable and constructive way.