Please keep in mind that this was a bug fix, not a nerf. Old ppsh were extremely over powered. Anyone that didn't realize this was either really dense or quite slow... Also plenty of people complained about them, including myself. So yeah. Deal with it.
Dang, never really noticed the complaints about the PPSH's. To be honest, I never really felt bothered by them.
Like I said before, I think a price change would have been more adéquat. Maybe 20 ammo per entity, and only up to three PPSH's allowed per squad. That would make it 60 ammo in total to be effective in mid to late game.