I dont see how it doesnt work. Make volks more effecient or stronger with both obers get hurt, you dont have space in your build or popcapped if all you need is volks.
No, you can't only have Volks. I specifically stated that Volks don't have to be buffed combat wise, they just need to be more efficient than they are now, so they could be made cheaper. If you only build Volks you're just going to lose every single infantry engagement. I'm fine with that but only if Volks are also cheaper. It makes no sense that the more expensive unit should lose to the cheaper unit and at ALL ranges. Even double Bren sections will lose to Volks at close range, and double BAR Rifles will lose to Volks at long range.