It's an issue with Volks being completely pushed off early by rifles. Believe me, I'm very sympathetic to the issues that both USF and soviets have with their infantry right now but sturmpios are too expensive to field enmasse.
I don't think the issue is whether or not the Okw need an early suppression platform (be it Kubel or my-34 ), it's how those units preform. Shrek blobs are annoying but I don't find the okw muni income to be so out of wack that they need a muni dump just to acquire suppression. Early shrieks are often needed for m3s and m20s and a 30muni dump to stop a blob would hurt that a lot.
I'd love to see cons buffed and the Kubel nerfed in some way but I don't think a muni dump is the answer.
Well, if you play as USF and you pay your grenades it not likely you'll have enough ammo to pay for Zooks or BARs, If you play Ostheer, you pay your LMG at cost of Shreck, if you play Sov, you pay your AT grenades at cost of molotovs and flamethrowers on your Penals.
If you play OKW you should have free suppression and only pay for your scherks? In all of my 1vs1 games vs OKW that goes farther than a Kubel push, after 10 minutes I'm facing a blob of shrecks + sturmpios before sturmpio squads being replaced by Elite troops when during that time I have no BARs at all because I need that ammo for smoke and dps nades.
BARs and Zooks are crappy today so it's not a big deal, but if they were better the choice would be more important.