And, if you like a better idea:
Sturmpios: Give them FLamenades that require T1 or T2 building. Give them a 90 mun single P-Schreck upgrade that requires T1 or T2 building this also replaces one stg44 with a luger. Remove Stunnade.
Kubel: Replace with MG34 and vice versa.
Voks: Replace Flamenade with Panzerfaust snare. Add a 100mun (or what ever) AI upgrade (Mg34, Stg44, G43 what ever) with T3 (Flak) building.
LeiG: Add Smoke barrage at Vet 1.
Stuka: Normal barrage is cyrcular and scatters (like kat and pwerfer). At vet1 the atm normal barrage unlocks with the cost of 50-100 munitions.
You should work at Lelic.