How about a SU-122 mobile artillery. It was a unit compareble to StuH but it could be an arti as well(mobile fire base). It was a rare gun but why not?
I gotta say that i Do love this idea Paciat. "It was a rare gun but why not?" Well, right. why not. Rilic doesnt care about facts like this as well.
But at the moment im just thinking about a sensefull slot in the soviet army to put it down (as a reward unit for sure). Surely its a heavy gun, so we gotta replace another heavy gunner.
My suggestions are replacing the -1) KV-2
because its the most similiar unit thinking about how it would act like. Would also fit the style of urban fighting.2) ISU-152
Since this vehicle can also be used as a breakthrough unit to replace the "taking forever to reload bigboy beastslayer which is in some eyes OP and in others just useless". A lot would like this for sure.3) IS-2
non doctrinal SU-122?
sounds strange. but howw, maybe this would be a fresh idea. But yet i cant image by myself how this unit would work as a non doctrinal one. Saying - dangerous idea though..