do you think is it possible , apart from the skill of the animator , to create feelings , body language etc if you are bound to use no more than , let's say ,60 bones for your character ?
Our body is fitted with hundreds bones, tendons and muscles
Yes. You can exaggerate some movements like in cartoon animation to express feelings just with a few bones. There is good literature available.
And for facial animations it can be good to blend bones animation (for the body) with morph targets (for the face).