This soviet strat is good because it has everything what soviets needs to win.
An interesting read (ive only just got Add Warfare through MWNL2).
I always thought that the best use of this doctrine would be to go tier 4, grab one SU85 and then supplement with 34/85s. If you can afford or it suits the game, get a katy.
This will be a slower start than T3 build. But you will end up with better AT and access to brilliant indirect fire from katy, something that is not normally achievable along side a medium tank in 1v1.
I feel that compared to guards motor, the lack of mark target and slight increase in 34/85 cost hurts this doctrines AT power, hence the SU85 attraction.
I suppose in your build you look to 34/76s ramming to add that AT edge. We all know thats a big coin toss however.
Also why use T3 with this doctrine, when by giving up con repair and ppsh to choose Armoured warfare you instead can call an IS2 to suplement 34/76s, while still keeping radio intercept, crew repair and skill planes. You lose a tiny amount of early pressure, but gain IS2.
Thats why I believe going T4 this doctrine truly brings something new to the table no other doctrine can
Edit: just realised that lend lease is another, possibly with less useful abilities though.