So far I consider 3 x volksgrens w/ Panzershrecks plus puppchen as needed to be vital for the OKW faction. Some players actually don't build volks and trade them for sturmpios or doctrinal infantry; personally it is the sturmpios that I replace, not the volks.
As the game develops, the Panther I try to get will be outnumbered so I don't use it against armor unless it's well supported.
^ (@ COH2PLAYER) I only play 1v1, I might give it a try though.
My only concern with that is that it leaves me without the medic van which I like to have because I depend on my infantry so much. .