Are you talking as a 1v1 player or for the balance of the game?
Do you know if they gave STGs or LMG 34s to volks, how fucked team games would be?
They are already mostly in Axis favor.
Simple, either give them MP40's so only good at near range or give them a weaker version of STG44 to reflect their state of being really young/old and untrained. It worked perfectly on vCOH, the Volks could get MP40's but that was coupled with biggest moving accuracy penalty in game plus only good at short range so it wasn't at all OP but a situational upgrade. Never saw it spammed to good effect.