Core changes are just probably not gonna happen like you're asking for sadly.
Yup. We are attempting to fix a symptom and not the root cause.
Still hold the belief that USF Commanders can be made into elements that can boost USF mid to late game performance.
In regards to late game punch a possible solution is veterancy bonuses such as increased HP to the Sherman or other vehicles once they hit vet 2 or 3. The Sherman Dozer from Armor company at VET 2 gets more HP if remember correctly.
The issue is just like vCOH, axis late game vetted units make the battlefield extremely lethal and unforgiving for USF players and the lack of get out of jail abilities like blitzkrieg, smoke drops, smoke screens just make it more difficult for vehicles to survive against AT that constantly PENs their armor.