Ostruppen, I do not think their performance should change. Their MG upgrade comes only when Base Tier 3 is researched which is late game. Cover mechanism is good since they only deal 8 damage per unit. Taking that away would make them horrible. They are a unit that relies heavily on cover compared to IS.
Ostruppen should be separate in terms of abilities and performances differences and uniqueness. Although I would not mind merging, but not change their performance. I am curious to hear your suggestions to the way their performance should be changed, in what exactly do you mean? Will their damage be the same, or increased. That kind of stuff!
Conscripts which I hope soon enough get 7 man squad option. Should be available any time. I think 17 manpower cost to resupply is too cheap, maybe 20-23 manpower.
Damage on its own does not mean much DPS is far more relevant.
The idea is changing them to be closer to conscripts once upgrade so their weapon could also be closer to Mosin also. They could even use Soviet made weapons.