You're missing the bigger picture here, it's very simple. The fact is USF can spam twice as many handheld AT weapons than OKW for the same population cost with regards to mainline infantry. No 'drawbacks', they can still spam as many bazookas as they want or LMGs as they want, in fact they are less hampered by their choice because 2x Bazooka rifle squad dedicated to AT is more effective at AT than 1xSchrek Volks squad forced only into AT. Volks don't have benefit of choosing between LMG and Schreck. If they choose Bazooka they can still have 1xLMG which can wreck most Axis squads or get more squads with 2xLMG to wreck everything. Meanwhile OKW is stuck with bunch of crap Volks squads only good for moving around one panzerschreck with no smoke and no snare. You also make it seem like Bazooka brings no benefit because a Rifle squad would lose some anti-infantry capability but you totally ignore the AT benefit it brings.
It seems you also have issue with 'brainless' Volks upgrade and praise USF 'strategic' upgrade between Bazooka and LMG. Following your logic, it suggests that the best course of action is to allow Volks to pick between Schreck and LMG so they have some kind of trade off. However your argument is biased and hypocritical because you agree with removing Panzerschreck and it pertains only to Volks. What about all the other units that only have one upgrade and no 'drawback'? Are they all 'brainless' too?
Let's not forget that for 200MP and 5 pop cap, USF can have a more effective AT squad (REs) than Volks for OKW. 2 Bazooka > 1 Panzerschreck.
Ok, so you pretty much just ignored everything I said. Fantastic.
The panzerschreck is twice as good as bazookas, it's not a fair comparison to say USF can get out twice the number of AT weapons when theirs are half as effective.
At a squad level, there are clear dps drawbacks to the bazooka. You cannot deny this. Saying you can make other rifle squads and give them mgs is true, but why can't OKW do the same thing? Stop blobbing only volks and expecting to beat an army of better units. Rifles are more expensive and better than volks, get some elite infantry ffs. Get some obers, falls, panzerfusilliers, or jaegers.
Yes, I do think that giving volks a choice between a panzerschreck and another upgrade would be an improvement. The problem is that nobody is going to bother to upgrade with anything besides schrecks unless the other upgrade is equally as powerful, which would be unjustifiable on a squad as cheap as volks.