Maybe instead of giving retreat point to Comissar and wasting a squad with lots of utility like that you could give retreat point to ZiS-6 truck?
Normally this truck would act the same way Opel Blitz does from Firestorm - you can ride in it and reinforce from it, but at certain CP it unlocks FRP and allows you to either spawn medics (cannot be controlled, like HQ medics) while its in immobile or just heal nearby units like USF ambulance. If you deactive FRP it goes back on long CD like Major FRP and medics run away
I don't know where you got that from but I suggested something similar not long ago.
However, that would mean another call in so something will need to be either replaced or combined.
And with that comes the fact that I think the Ost commanders are left down in the mud, only the 5th man squad upgrade is new and unique, Stormtroopers are present in 2 other doctrines and aren't generally worth it right now, Arty officer is in I don't know how many other doctrines.
Forward Supply Station and Urban Assault Panzergrenadiers would be fine new and unique additions to German Infantry.
Then both Armies would have a forward retreat and some brand new units to use, win-win.
Wouldn't mind Ost also getting that repair pioneer upgrade for their bunkers as well since they're basically stuck with the shittiest repair rates in the entire game.