A Su-152 with machine gun would be a nice add (as premium IF it includes the 12.7mm as AA gun). Most historical pics did not have machine gun. Could be a BR IV if it takes on Tiger II Tanks
Because of its adopted role as an impromptu heavy tank destroyer, capable of knocking out heavy German armored vehicles such as the Tiger and Elefant, it was nicknamed Zveroboy (“Beast Slayer”)
For those who are afriad of their powerful armor let me remind that one of the best weapons against vehicles are anti-tank guns. Remember those. And if we get more and more heavily armored vehicles, more powerful guns will be the best solution