I didn't even know capping was possible! Why aren't we using this more? Would love to see heavy hitters like the IS-2 actually have some accuracy, the reason it was nerfed was because it was a squad wipe machine. Let's give it some freakin' accuracy and just put a cap on it so it can actually hit tanks half decently without deleting Grenadier squads.
It would be much better to fix heavy tank infantry damage by using a Brummbar-style AOE profile that doesn't have a huge one hit kill radius (the 80 damage radius) but instead deals significant health damage in a large area, so 1-2 shots will reliably force a squad to retreat regardless of scatter.
Tank AOE damage should not be artificially capped at 2 models because it would encourage blobbing and tanks should still be able to take advantage from model clumping. For example when a squad is on the wrong side of cover it's a player error that should be allowed to be punished and the squad should take full damage when the shot scatters into the cover behind them.