Damn.. I didn't even think of that. Yeah that would've been pretty cool, wouldn't it've?
Advanced Warfare, Soviet Reserve, Conscript Support could all benefit from Soviets receiving full PPSH upgrade as they would serve as the elites for the doctrines while having fairly exploitable weakness. PPSH upgrade could have been used to unlock Oorah or not depending on balance testing.
The Player would have choice between cons which would be significantly weaker but with AT nade and easier on MP or slower stronger Penal start with power spike to try and get early wipes to keep pressure up as the PPSH will fall off as Axis get more Vet. Mixing would always work well as cons could Merge into PPSH Penals to keep pressure up and obviously Soviet Reserve would allow T2 skip. Both Soviet Reserve and Conscript Support have rapid conscription so planned hard pushes could net a conscript squad to replace lost PPSH Cons/Penals into 7 man Cons.
At CP2 PPSH Penals also compare extremely favorably to the other Soviet elite SMG squads as 1 Penal can be expected to be at Vet2 or extremely close at that point. They will deal more damage and have better survivability compared to Shocks, Airborne and AssGuards. Obviously once they start to vet they will outclass Penals in specific areas but Penals will deal the highest damage consistently due to Vet3.
Shocks have durability and smoke, Airborne have cloak/first strike/smoke, AssG have assault nade/mixed model DPS.
The other advantage Penals would have is more squads, as most know when you see an elite squad be it Obers/Shocks/Rangers they will get focused down. With 3-4 squads of Penals this will be hard to do so it would allow for some interesting matchups. I have had some success using Airborne tactics but the weapon drop telegraphs commander choice and severely limits how fast I can deploy my strat.