Let me put it simply. I do not care about shreks. not after the puchpen became viable.
And volks are not cheap and second they are the okw main infantry and should be used as such. having 5-6 grens is not uncommon. having 5-6 rifles is not uncommon either. soviets rely on elite and highly effective callin infantry. and the okw needs a buff in order to stand up to the rifles or shocks/guards.
You may not care about schrecks but I'm fairly certain that many, many people do especially in the early game where allied light vehicles simply roll over OKW. Volks aren't supposed to be the general use infantry that the other factions have. The deign is for specified roles and for them to have such an upgrade defeats the purpose of about half the commanders that have call-in infantry that are better equipped to deal with infantry. Volks will never not have the schreck upgrade and with a viable MP44 upgrade will merely promote the do-it-all infantry that cause massive blobs that you a-click to victory.