Why don't you test the US commander with the 76mm sherman as well as dozer blade upgrade?
It's not going to instantly turn it into a godlike commander, but it will make it much more viable and useful.
Or even the easy8, so that there is one decent commander with the easy8.
I really don't get what you're worried about, considering one of the new Axis commanders has a much better medium tank and a tiger ace, on top of everything else that commander provides.
Because apparently this community belives that rocket artillery + medium tank would be broken, but only for usf.
Heavy tanks + rocket artillery + elite infantry is fine for other factions tho.