Hey, how to use soviet armors?!
Light tanks T-70, T-90 are just late game halftracks.
T34/76 can not match tanks.
T34/85 is best so far, fast but little lacks anti-infantry, and loses to Panthers.
IS-2 is far tooooo slow. Even Jadgpanthers and other assault guns can flank it
SU-85 costs 600mp, and has armor thick like paper. Definitely unbalanced doctrinal unit.
If soviets are not going to have halftracks, BT-5 or BT-7 would be nice addition to their early arsenal... Those were, what the german infantry faced first at 1940.