Nom,
If you get a chance, check out David Miller's The Cold War: A Military History. I think it will be a lot of help for this project.
I think that Vasily Sokolovsky would be a good Soviet Tech team for the post war era. I'd give him Combined arms, large unit tactics, large unit focus, training, infantry focus and start him in 1952. I'd say skill 7.
Also, I think that the DFR's Krauss-Maffei team should be dropped down a skill level or two. The Leopard is a great tank, but the Soviets should be the real innovators in tank design during the post war period.
I think you should add a second surface to air missile tech in the secret weapons tree. This could represent systems like the Nike-Hercules Missile, which came about in the late 1950s/early 1960s. It could add another +50 to flak power.
I'd like to see a 1960 artillery brigade. An example for this would be the
Soviet Union's 122-mm howitzer D-30.
I'd also like to see a 1950s heavy tank brigade. This could represent the likes of the IS-10/T-10.
I think you should add a 1960 version of the anti air artillery brigade. This would represent the ZSU-23-4 (and its canceled American counterpart, the Sergeant York).
Speaking of the brigades that people don't really use....
In my experience, HOI2 players tend not to build anti tank, anti air, tank destroyer, heavy tank, engineer, and super heavy tank brigades. The self propelled artillery brigade is a vastly better bang for your buck, than most of those brigades. Perhaps you could give the post 1950 models a bonus to organization? Then players would have more of a reason to build things like anti tank brigades.