Buy a 251 reinforcement halftrack and keep it safe. That will solve both of the issues you are raising.
really? instead of having equal mainline infantry i need to invest fuel in a mobile reinforcement point that will be sniped by a t70?
The reason wehrmaht infantry is 4 man is when vanilla was released conscripts were even worse than they are now and maxims too so wehrmachts mg42 was this awesome weapon platform that made 4 man enough for mainline infantry.
Now all factions has better infantry and just as good or close enough, machine guns as wehrmacht. And how many months are you gonna waste on this penal debacle? I could write a wall of text issues that needs to be adressed.