Let's bury the "but my poor cons!" argument here, and let it rest in peace. Grens are a source of heavy MP bleed and need a hotfix.
The PeePeesh upgrades renders ASSgrens and Pgrens dead so it should be removed from the game. You get the idea.
Lol, everyone here like to speak about "assymetrical balance", don't want to have copyfactions...
Making "5 men upgrade" is copy of UKF, isn't that problem? I guess it is, cos even UKF doesn't deserve to have such upgrade and you want to make it in Ostheer, which infantry is very nice already.
Yes, they can be wiped, so what? Let's make mechanic, which will save your squads with 100% from random wipe just because "it's stupid to lose your squad to 1-shot shell"? Nope, it's fine actually. That's how game works. Lost squad? Bad luck - buy new. I see no reasons to cry here.
Argument of "but my poor cons!" is available, because again - it is part of "assymetrical balance". Cons - survivable, but bad in dealing damage. Grens - deal damage nice, but fragile and dying fast. Personally I like second more, cos I don't need units, which only can get damage, I need units which damage deal! If you want to fix a point of grens, which balancing them with all other infantry squads - then fix it for all such squads, Cons really need late game firepower buff!
If you want to have as Ostheers mainline survivable infantry - change Grens and Osttrupens positions then. Osttrupens are very survivable with 6 men squads - just what you need! But you know what? We already have faction, which has Osttrupens as mainline - USSR.
About PPSHs - Assgrens are really weak and should have lategame scale STG upgrade, I think. And PZgrens are fine against PPSHs, if you keep your grens under control.