The Berlin campaign really needs a more open, rural map - Seelow Heights or any fictional Berlin suburb village.
Even T-34-84 and Pz IV feel incredibly claustrophobic with all these barricades, indestructible buildings and prop burnt tanks, imagine what IS-2 or Tiger II will feel like (were seen in Berlin 2020 test) or Jagdpanther/ISU-152 with no turret.
I haven’t played much Normandy but in Moscow the tank freedom balance feels much better: yes the tanks are smaller but even T-28 and Pz IV will have some fields to maneuver and are not restricted to ONE lane with every infantry player on the enemy team having a barbecue in your blind spots on the sides, and enemy tank staying at spawn pixel hunting your turret.
The goal is not to farm infantry but to have a chance to actually drive these gorgeous late war tanks for more than 30 seconds and actually help your team.
Wilhelmstrasse here as an example.
Spawning big bulky late war tanks 60 meters apart from each other with on the only available lane street and buildings on both sides. It’s just a tank graveyard by the end of the game.
