Just some crazy idea:
- Move Obersoldaten to Mechanized Regiment HQ
- Lock MG34 upgrade in Schwerer Panzer Headquarters
They would be like more elite version of grens vulnerable to light vehicles (no faust), high cost/bleed/popcap would prevent them from spamming. This way we might see them earlier, they would have more time to vet, made Mechanized Regiment more interesting and with MG34 upgrade (unlocked by Schwerer Panzer) they would scale better for late games.
It's only idea probably needs some tweaking aswell