Before all the German tankers start drooling too much about the 'one shot kills' from their 88's, you better throw in a variable for reliability - Panthers and Tigers becoming pill boxes when the drive train break all on its own

Didn't I read somewhere that more Tigers were scuttled by their own crews (to avoid capture) than destroyed by the enemy? Part of it would be random, the other related to speed - the longer and closer to 100% throttle used, the more likely the tank is to break down.
What ever you come up with, it sounds like a great idea!