The Panther is also for all intents and pruposes a tank destroyer, seeing as it's nearly worthless against infantry. That's a fine role, but it should definitely beat a SU-85 1v1. It's more expensive, comes later and has the same role, there is no reason that the SU-85 can simply reverse to destroy anything short of an Elefant. Panther is fine, SU needs a nerf; buffing the Panther now risks making the T-34 even more obsolete than it is now. In closed beta the Panther was what the SU is now, a godmode unit that makes any and all opposing armor useless merely by existing. It shouldn't go back to that.
Panther had its time, every patch will create a new godmode unit, my proposal is a SU-85 ROF nerf while giving Panther AI power to make it worthwhile.