I would like to see deflection damage on certain AT units (Heavy AT like M36, Pak 43, and up) and on artillery units / aircraft which would be hitting the thinly armoured roof.
Reminder that Vehicle Crews do a high of 16.5484 DPS while Assault Engineers do 48.0312 DPS, yet both use M3 Submachine Guns. I don't know why people are talking about some weapons being too good to be part of a Volksgrenadier upgrade package, there's no limit to how good or bad the Volk's weapons can function.
Move Panzerschrecks to Sturmpioneers as they originally were. But also let the starting Sturm squad begin with a free Panzerschreck in hand. Not only does this reduce Anti-Infantry firepower on the starting unit, but it gives OKW an early counter to the fast M3 / WC.