I like that.Well I suppose while cruiser tanks were the highly mobile force that could flank and surround the enemy the infantry tanks was the slow, frontline tank that attacked the enemy from the front.
So I suppose the first obvious thing would be a movement of two or three, and then maybe a bonus or penalty that reflected its use.
Maybe a bonus against fortified units? Or maybe a bonus that was the opposite of the cruiser tanks, like a bonus for defending and a penalty for attacking? Or maybe the ability to fortify like infantry units?
Personally I would go for the bonus for defending and penalty for attacking, just because it sounds like it would have good synergy with the cruiser tank.
slow movement is certain and I agree on no-stacking with infantry, we'll have more than enough support units soon.
then
bonus vs fortified units + bonus while defending or can fortify
or
penalty when attacking + bonus while defending or can fortify
I'd prefer to avoid a (penalty when attacking + bonus vs fortified units) combination, as it sort of cancel each other, and I have a preference for the bonus vs fortified units proposition.