If we buff the T-34 vs infantry, best to just make the MGs do a little bit more rather than the main cannon, though if there's one thing the T-34 does well it's crushing troops.
SU-85 overlaps too much with the SU-76 atm. Both fire quickly, have the same pen and both a relatively fragile when caught out of position. I know some people have suggested to change its vet to make it less of a rapid fire machine gun and have its base pen moved up. I would say it could be made closer to a Jagdpanzer where it's well-protected against other mediums frontally like it used to be, especially since it can no longer warp speed out of the area like it used to. Would help differentiate the SU-76 and 85 more as well.
It also needs its accuracy brought in line with all other TDs.
Increasing the mgs could be good, it punishes players for standing in front of tanks but doesn't wipe squads as much as main gun improvements it just needs to be able to inflict some kind of bleed w/o running stuff over