The Soviet's are designed to lack flexibility relative to the Germans. You aren't meant to get more than 1 late tier building.
Just an awful idea. By giving a faction this kind of handicap you are limiting dynamic game play. Once the German player had determined which late game building the Soviet has selected they can hard counter it with their superior armor. The soviet faction required combined arms to counter a Panther, Tiger, and Elephant. This change will mean the Soviet player will either have to sacrifice the Ram ability or the SU85. This will take additional AT capabilities away from the Soviet faction.
There are well documented threads about the lack of viable counters to the Elephant and Panther(s) on all three community forums which have been seemingly ignored. This is going to aggravate the issue further. German armor has just been passively buffed. I can only put my faith in Relics super elite and open balancing team that armor balance will come in the following patches.
Not.