The problem with adding units to Russia is that America/England have been made virtually impossible to kill. So we either make the game more fun for Russia AND weaken USA/UK to make it possible to beat them again, or we don’t do anything and leave it a monochromatic game (attack Russia being the only viable strategy.)
I, for one, seriously miss being able to do KEF. I’m not saying it was an “I win” button, because it wasn’t. But I miss the OPTION. At least KCF (Kill Calcutta First) is still very viable.