How about self propelled artillery ? 120 mm ?
Or a really fast and common tank like the T-34?
And an anti-tank thingie (can't remember the name), with the 88mm?
Or the Churchill. Ok, - slow, BUT able to climb steeper hills than other tanks, and with lots of main armament, such as flamethrower (hmmm,useless in AH), mortar with a much bigger caliber than our LVT, anti-minefield equipment (YET useless in AH), and so on......