Make arty do semi-reliable crits on vehicles would be pretty awesome.
70% chance crew shock
10% chance engine damage
10% chance heavy engine damage
10% chance gunner injured
Figures pulled out out my ass. Main gun destroyed might be slightly harsh, but I'm open to it being included.
It'd probably have to include another mechanic for some sort of temporary immunity to shock after being afflicted by it, because just two shells hitting the tank and stunning it still sounds like it could be pretty crazy. Crew shock lasts like 5 seconds, right?
Or you know, doing that and then engine damaging it anyway or something!