About ATV-40 as possible coh 2 introduction.
"an SVT version capable of full-automatic fire (designated the AVT-40) was ordered into production on 20 May 1942; the first batches reached the troops in July.[7] It was externally similar to the SVT, but its modified safety also acted as a fire selector allowing for both semi-automatic and fully automatic fire modes"
As far as I remember it wasn't a very successful rifle. The cartridge was too powerful to shoot short bursts like STG would and the gun had no bipod to be used like a BAR. In effect the only point of using full auto was fighting in close quarters. Such characteristics, when transformed into coh2 weapon model would mean very short burst at long to mid range, effectively equal to SVT and big dps increase at short range that would overlap with SMGs. It doesn't sound great, does it?
Btw. honestly, we don't really need assault rifle on every faction. And SVT troops definitely give soviet forces enough mid range oriented firepower.