In this MOD SU-85/FF/M36/Panther are "heavy tank TD" better suited to counter enemy Super heavy tanks. They can penetrate Super Heavy tanks but that are not cost efficient vs meduim spam.
If one's opponent is spamming mediums one can, spam medium also, get ATGs, get medium TD like the STG, M10 and SU-76, get AT infantry, get premium mediums like T-34/85, 76mm Sherman, Comet.
On simply can not spam M36 only and expect to be able to counter everything.
No, you build a load of Jacksons and you expect to win the
armour battle against an opponent who's equally invested in generalist tanks. Those Jacksons will do pretty much nothing to infantry, whereas generalists inflict manpower bleed.
The
entire point of tank destroyers is they're
more cost-efficient at tank combat than medium tanks. Medium tanks are in turn effective against infantry.
You seem to want a rock-paper-scissors game where OST and OKW get to see what the opponent picks first. Were your balance goals ever implemented, the game would devolve into HMG spam into medium tank spam, with a nigh uncounterable heavy tank if your opponent ever outplays your armour. In the event that they do reactively field counters, go back to spamming mediums to render that SU-85 a handicap.