I disagree. Have you ever seen a production of WEST SIDE STORY or A CHORUS LINE where people couldn't dance? It's painful and it's disrespectful to the art in my opinion. CATS is another show that should only use the original choreography in my book.
"For me, THEATRE is an anticipation, an artistic rush, an emotional banquet, a jubilant appreciation, and an exit hopeful of clearer thought and better worlds."
~ an anonymous traveler with Robert Burns