Yes, minimally faster T1 that will affect the first unit only and only if you do not build a second engineer.
Better healing - true that, similar to other factions
Soviet unit with larger number of entities benefit the most from healing and it also cheaper only for soviet.
Faster T3 - minimally faster with a nerfed/retimed T70. There is no added power to this as long as the T70 nerf compensates for 5 fuel, which it does. As I said, the option is to keep the M5 and SU76 useless, which you seem to be arguing for if you want to keep the old system.
There is since 5 arrives earlier and can heal up very fast. Soviet get faster on field and healing and still have merge
MR: How is it 40 fuel earlier? At the very best, it comes 5 fuel from the AT/molo bundle + 10 fuel from T3 earlier, or did I miss something? Also calling it "better" is misleading. Conscript builds do not benefit at all (these builds rather got nerfed), so the "better" MR does not add any benefit. Penals now get benefit of reinforcement cost and veterancy gain (if I am not mistaken since I find the notes quite confusing about this). But I assume that this is not worth it spending resources at T3 (heck, the reinforcement benefit will never pay MR back until T4). So at this point it is more like a global buff to Penals at T4, similar to Ostheer. Penals needed some kind of buffs (or technically yes you could nerf everything else, but let's face the facts and work with buffs since this is what we got and get), since they were just not viable and bleed even harder than grenadiers.
The T3 tech has been reduce by 20 and AT grenades/molotovs no longer required. The upgrade is superior since now it includes Penal and it has become available earlier in T3 from live
And please show how Soviet tech became cheaper. There was a bit of fuel shuffling, but even that not in large amounts. If you seriously want to count in molotovs to end up at a 5 fuel cheaper cost, than this discussion about that is rather pointless since those were simply not worth getting.
Healing is cheaper and molotov/AT grenade bundle now has a discount.
The tech is superior (faster T1/MR affects Penal for free/Healing is faster and cheaper/T3 earlier) and cheaper.
Tech for certain is not less strong or more expensive.
Is that a major buff? probably not but will see.
Adding more buffs making even cheaper as suggested is simply not needed.