Realistically Soviets have always relied and will always heavily rely on doctrinal abilities. Now should we work with that fact or just put our heads in the sand and act like it's not there? I also don't accept this axiomatic take on doctrines being "extras". This ideal will never be reached anyways. Why don't we call the soviet reliance on doctrines "faction flavour"?
But that's not how Soviets are right now. We have already achieved that "ideal".
Conscript can work without PPSH/SVT/PTRS by going 7man upgrade and actually scale into the late game. Before you will discard them outside of 1 or 2 for snares.
This means Elites are good but optional.
Giving PTRS to Penals had the objective of avoiding the must need of getting a Guard/45mm AT gun.
T34 actually has a job outside of been a ram platform as it has decent AI. If you need to deal with heavier armor, you are not forced to get T85s or heavies as SU85 is not a medium murder machine as before but rather focuses on penetration.
On your last point, the whole reason we don't kept that faction flavour is because people don't like facing those OP flavours which glued the rest of underwhelming units.
What i would try:
-Increase cost of CE by 10/20
-Increase cost of mp pool (initial mp + CE cost) to be equivalent to the other 4 factions.
-Fuse the molotov + AT nade in a single upgrade. Just keep the cost of the AT nade.
-Make medics cost 200.
-Penals, decrease build time. PTRS + Satchel requires unlocking AT/Molli package.
-Maxims, give the suppression at vet 0 with increased muni cost. Vet 1 decreases muni cost to current. If to underwhelming, vet 0 is given the current cost and vet 1 decreases the time for activation.
-Zis, increase cost of barrage or controversial, swap it with Tracking.
-Tracking changes (includes Su85). No longer provides a vision boost nor infantry on minimap, rather it gives a vehicle detection (minimap) plus the British tracking (keep vision of units tagged) for a certain period of time. Removes the silly combo of tracking + focused vision.
-Reduce cost of T3. This cost deduction is shifted towards T4.
-Nerf T70 to the equivalent of the P2.
-Monitor the M5. I would like every AA unit to be as good as the Quad. Though it could be tweak down if it can't be possible.
-Apply Mirage's changes to the Su76.
-Ram: i think a plausible way to tweak, at least for the T76 variation (so maybe keeping it the same in the T85), is to remove engine overdrive and make the ability cancel the moment it takes +80 dmg from any source. Or make it a skillshot (it can no longer maneuver) as it just goes forward, it doesn't cancel on dmg but any hit reduces it's speed.
Nevertheless, remove the silly 5/3/2 % criticals. At least make them based on enemy vehicle HP threshold. So if it pens it's always engine damage and the other criticals only apply at say 20% HP.
-Su85 reduce vet 2 pen increase. Vet 0 does it job more than well and vet 2 is just overkill.
-Fix Creeping barrage bug
As far as doctrinal things goes, i would only adjust the ISU152 rear armor and remove the IL2 bombing strike from those commander (same applies to Ele doctrine). For everything else is a case by case thing.