The Soviets are pure Docs. In all the matches, most people choose Docs with elite units, so the best stuff is:
Urban Defense Tactics:
-FHQ in 4v4 there is a lot of abuse, so it is best to replace it with an elite unit, if possible Shook Troops (partisans is not the same).
-BoobyTrapTerritory, this trap occupy a commander slot, which makes the commander waste, so it is better to replace it by Conscript Repair.
-Fix: M-42 ATgun copy/paste as Rakete OKW,
Defensive Tactics:
-PMD-6 ATpersonnel, this trap occupy a commander slot, which makes the commander waste, so it is better to replace it by an elite unit, if possible Shook Troops (partisans is not the same).
-Fix: M-42 ATgun copy/paste as Rakete OKW.