I would rather like to see the T34/76 moved to T3 and locked behind an upgrade and the KV 1 added to T4. The KV 1 would work perfectly with the SU 85 and give the Soviet core tree units some survivability which I always felt they lacked. By replacing the KV 1 in Counterattack Tactics with KV 8, IS 2, KV 2 or T34/85 this doctrine would be buffed a little and be more than just mediocre again.
Or they just simply make the KV-1S or the KV-85.