OT: Haven't seen too many ferals around, but the ones I've seen heals a lot. Instant big heals. Sure they rely on healing just like everyone ellse. Your question is a bit hard to answer though. If your question is if the ferals still will be viable, then the answer is yes.
English isn't everyone's first (or second, third, or fourth) language.. I took the liberty of fixing the subject title. In the future, such a small typo can probably be ignored.