Profile of nee

Besides asymetrical gameplay, the reason why is because SU-85, ISU-152, and now SU-76 fulfill your antitank needs just fine.

What will happen with units like BS3 is either no one uses anything but BS3 because it's so much better...or no one uses BS3 because it's hardly more practical.

If you want late-game team game support, you get one or more of the above.

If Maxim is best setup time, MG42 has best suppression, and 50cal has best damage, IMO MG34 should be in the good combo of their attributes statwise.
And no, it should not be non-doc, OKW already have kubels, plus you need to fill in two doctrinal slots to deal with that.

Maybe also give MG34 a different vet1 ability? Besides stats it is literally just OKW MG42, maybe a sort of Focus Fire clone that increases some stats but limits firing cone.

The issue with USF being more micro-intensive isn't terribly bad when it's 1v1, but once you go higher, you can easily get mauled by multiple players' worth of units. At least Ostheer can count on bunkers covering some of your gaps; Fighting Position on the other hand is crap, so defensive structures is not an option for USF.

The closest we can expect for a heavy tank is through doctrines, and frankly, that isn't a solution unless that doctrine becomes the ONLY commander worth playing, which is probably what would happen unless the Pershing unit would play out like crap. In other words, introducing a heavy tank for USF is nice, but ultimately is not (or should not be) a solution but rather an optional extra via commander.

One thing to consider: Volksgrenadiers have no vet1 unlock like most infantry units in this game, they instead gain -10% received accuracy. Riflemen only unlock a critical hit ability (compare with T0 AT capabilities for OKW, and Grenadiers' Panzerfaust also at T0.
IMO, seeing as how USF is really attrition-based, Riflemen's vet1 could be something like passive healing to make up for having high risk of losing men when they are out trying to take the map. Nevermind ambulance is paper armour, slow, and building one means you cannot be using T0 to get weapon rack, grenade upgrade or more men, and healing would only apply out of combat and doesn't replace reinforcing. That, or Ambulance reinforces and heals even when moving.

As you say USF is all about flanking to be effective, I think factional benefits ought to emphasize that, ie BARs allow your units to inflict greater damage if the target unit is not firing back (re they are firing at something else).

Also, no non-doctrinal mines besides investing into LT and M20, whereas everyone else only needs T0 builder unit.

I think he's just trolling as usual.

Thing is, you either cant decide if it's VP or Ann. match the same way you cannot decide what AI difficulty without unchecking the boxes. And I doubt Relic will revise the AI just to add another option box to deal with that.