Swapping the durability and rate of fire of the panther and stug may prove to be worthwhile, though likely distasteful to the powers that be.
What i mean is ro reduce the health of the panther to 720 like other "advanced mediums" as they're being called. The vet 2 health bonus could be reduced or even removed as well. Give the panther a rate of fire like stugs.
Reduce stug rate of fire to current panther levels, and boost its health and armor to match the p4.
I toyed around with this in a test mod and I felt it functioned rather well. Osheer suddenly had a unit that could buy time and field presence without being a total crutch, and the panther became a frightening tank hunter, but not a damage sponge.
But it's a significant change that would require serious playtesting, which isn't really possible.
Wouldn't the Panther then be more powerful in most cases to overrun most tanks and win most DPS races while packing superior health and armour?
Unless you're getting hit by snares or non-160/200 weapons, you're just as durable against the majority of weapons as you are at 800 hp and now you have a tank that puts out a round every 4-5 seconds with 320 armour and one of the fastest speeds. StuG G at that point might as well be a SU-85 or Jagpanzer IV and 560-640 hp is mainly a change vs 200+ damage TD from 3 to 4.