The regular Sherman offers loads of scenario possibilities and I can see also uses for it in the MA. You could have a DD version available only from CVs, more vulnerable than an LVT in the water but much better (or rather much less crap) on land. Also the 75mm or 105mm gun could be an option in the loadout screen. As has been said the 105mm would be a useful building demolisher, but even worse than the 75mm for anti tank work.