Than give okw Nondoc anti Mg options.. Maybe a car which can carry a sqaud. Or sniper.. Or a t0 MG or mortar.
This is the basic for every other faction
I do unserstand why you say that but the OKW has an agressiv design. Nothing can be add at T0 and Volks already have incendiary nades which are meant to deal with stationary weapons such as HMG.
Micro properly your volks, spread them and use those nades to make them relocate or back early on. Then you can either use Luch or IeG to deal with later.
However the idea of adding a bit more armor to the kubel might be discuss, but I don't think it is a balance issue.