Conscripts have a low cost to reinforce, are numerous and weak. They are designed around being cannon-fodder. This can lead to some problems later on versus upgraded axis troops.
I think it would be cool if there was an upgrade (similar to the Molotov, AT-nade upgrades... maybe 200mp, 50 fuel) that increased their squad size by two members. This upgrade could be tied to T3/T4 to not come too early.
Russians revolving around MGs the same way as the Germans is unrealistic and copy-paste design.
Yet a Script squad costs 100 to fully reinforce while a Gren squad costs 90...
I'd be mostly uninterested in getting more models to pay to reinforce, because that's what they'd still do. They'd be more likely to survive tossing grenades like usual and more or less still lose to every other infantry.