Even with availability huugeee for 90s ubertanks you would be mad not to babysit them since they are quite big investment point wise. And if you would make them cheap then you would just have uver tanks on all sides ann the field and it would be the same like getting totally rid of them, since it would be the same everywhere, so in the end this just revolves around which 3d model you prefer x)
That's not totally true. SH have different qualities. M1A2, Chally 2 and Leo2A5 hits strong and endure a lot of punishment, KMS and Leclerc hits and move fast, Soviet tanks have long ranged ATGMs... Each Nation still remains on a doctrine. But given the already enormous prevalence of the heavy tank meta, at least that would allow fun 10v10 tank engagements.