The command PIV change is a fix but it is irrelevant in 2 senses. That it still fulfill it's job of preventing wipes and adding a +1 shell survival to all tanks but in it's current form won't be a top choice, cause it already isn't.
If the unit needs love, it could be improved through MG DPS so it turns into a support AI tank.
As long as the unit buff allied units with dmg modifiers, it will always be hard to balance. You could try reverting some nerfs and make it so it only affects your own tanks and only allied infantry/support weapons.
the stug would like to have a word with u as 144 x 4 > 560
And we all know how much the stug is used
Even worse for the puma now the cp4 does nothing for it both vs 120 damage and 160, it’s just a jk now
Change it to 0.85 so it actually give 1 more hit to all tanks at least (puma will still be a jk)