These new Volks should have 6 men, dps adjusted to match before but with price increase to 270.
I don't think that adding more models to a unit will make the balance better.
IMO major balance issues at least for the Axis sides is the fact that the soviet units are so hard to annihilate, there will most of the time be at least a single man that will survive.
It's the same thing with Panzerfüsiliers, but it's the only German unit (together with Osttruppen) that have 6 men.
On the other hand every soviet unit (despite engineers) has 6 men.