i think medics are not needed in coh2, the reason for this is simple. Germans was agrressor on soviets, its not like in france where they were defenders + they will get vet throug battle so camping here really wouldend fit in game so much like in coh1. Its good to see that axis will be played more agresivly and searching for kill in the battlefild.
Probably med bunker will be replaced with some new ability
well soviets have kv 1 which is heavy tank and i think he will be balanced vs panters + you probably as russian have some armor doctrine where you will call IS or some similar russian steel tank which will be with support enough good to counter tiger.
Russians have heavy tanks which US dont have in coh1, so AWM in coh 2 will not be needed, + t 34 ram will play crucial role in tanks fights
Tank battles will be more balaned.