This must be balanced by reinforcement cost, not healing.
My point is, Vipper seems to firmly believe soviet squads return to base when 4 or 5 models are still alife.
We both know the reality.
The medic change will have anything near noticable impact almost exclusively in blob warfeare where you mass retreat constantly.
Soviets will benefit from the change barely more then any other faction and he, as usual, blows it completely out of proportions, likely because he haven't even played soviets yet and isn't aware of its actual impact.
It was intended that way though and is Soviets best way to keep team weapons on the field. Merge functionally replaces an FRP.
It keeps selected squad on field longer.
It does not keep your actual map presence topped of.
Its similar in micro scale(you want X squad to have all models back on field) and completely different in macro scale(you want all of your infantry to have max number of models on field without retreating them).
That's fundamental difference.