Buffing the AT on ISU-152 and IS-2 is the absolute wrong thing to do, they are Commander specific. Soviets need good dependable non-Commander specific AT to deal with the good dependable Tanks that Germans get on the base faction and not on specific Commanders.
Very Good point, The commander abilities are supposed to be supplemental to the core army based on the kinds of strategies a player likes to use. But right now Soviets have to completely rely on Commanders to answer whatever core army strategies the German player decides to throw at them, pick the wrong commander as soviets and most likely you will lose and lose hard. I fully agree with you that Relic needs to be looking at the soviet core army making sure it has the tools necessary to stand up to the German core.