What soviets need is NON USELESS veterancy...
What is the difference between a vet0 t34 to a vet 3? NONE in terms of combat usefulness, no bonus to pen/acc/damage.
Seems you need to re-read
this.
T-34s get very nifty reload bonuses and are dirt cheap along with being relatively easy to vet up. Shooting more = more damage and DPS.
On the actual issue, Conscripts could use some changes, though likely to their own upgrades and maybe their reinforce cost to emphasize the role as meatshields/cheap support troops.