Diaghilev was the first to notice good character dancers and that sort of thing.
You cannot create genius. All you can do is nurture it.
It is a fact that all the ballet's fundamental dance steps are derived from the folk dances of Western Europe.
As time goes on, all schools only get left alive if they have found something special themselves.
Classical ballet will never die.
You never advance without losing something en passant... you lose it because you're paying so much attention to the new thing.