I guess it's time again for an IS-2 thread?
I'll give the usual disclaimer - too many ppl (balance team included) have PTSD from the 'heavy tank era'/Tiger stalls. This sabotages possible buffs to even the IS-2. At this point I think it's more likely you'll see a KT buff than an IS-2 buff.
I agree with the idea that many people are afraid of buffing heavies since they remember the heavy stall meta. IMO that was the absolute worst teamgame meta I've seen in this game. Recently i've been using heavies including tiger 1s, pershings and the ISU, but haven't tried the IS-2. Remembering the backlash after heavies were nerfed and everyone thought they were unusable, they're actually mostly ok, and I think the tiger 1 was the only tank to have its nerfs partially reverted. While they're not game ending anymore, they do have their very blatant strengths and weaknesses, mainly AT walls.
Due to the very blatant lack of IS-2 i've seen being played it could probably use a minor buff. I never understood why the pershing has a longer reload than the IS-2 because the IS-2 had a 2 stage shell, but that's just thematic. A damage buff to 200 would assist in dealing with panthers and heavies while keeping TTK solo vs mediums the same. It would also be nice to have something to point to when it's claimed it uses a 122mm shell and does the same damage as the long 75 p4 lol. Always if need be, nerfs accompanied by the damage buff can always be considered such as price, mobility or reload.