My suggestion from the last thread about this topic:
Why not implement something that is already in the game?
I remember the campaign had units called Frontowiki squads. They are basically buffed cons with ppsh and ai nades.
My suggestion would be to give cons the option to upgrade to these Frontowiki squads once they reach vet 3. For a small manpower and munitions price + t3 or t4 researched .
By this the Soviet faction manage to scale their cons well into the late game. It would support combined arms because you'd still need 1-2 cons squads for at nades and sandbags.
And fanboys would get their battle hardened core infantry that has a better name than conscripts.
Frontoviki squads are practically conscripts with ppsh package + ai nade... Exactly. Nothing. Its doctrinal and its a downgrade.
There's no point touching conscripts ever. They only "scale" to the role of cannon fodder and that is the only thing theyll be able to do. Conscripts win games with their low upkeep and cheap reinforce, not with firepower.