Shoot faster and don't miss will be a good start.
and possibly same range to match SU76/85 and Firefly and Jackson
lastly - why don't you make the main gun able to snipe one infantry model per shot like vCoH.
Killing one infantry model per shot for such an expensive tank when there is no tanks around isn't anywhere game breaking.
Simple "Balanced" otherwise SU-76/85 can't do good if what they do give them death sentense. They already suffer from how slow it was and "Fixed turret"
in vCoh it does hit more than one model per shot but if they really need to snipe one model per shot i suggest we better stick with 3 MG like it was. I think the issue was surface machenic ,which i can't tell properly need to ask someone who does know thing to get proper answer
And.... you know what yesterday i've played vCOH and my 2 panther own 10-13 Allied tank parade. Do you have a same feeling as me ? , that something is wrong