"I'd love to see Ruthie Henshall as Cassie, she is one of my favorite triple threats; however, I believe at this point she is too much of a star and would throw off the balance of the line. In "One," Henshall would be the star the chorus is singing about, not a chorus girl."
Once again, folks on this board overestimate someone's stardom. She could walk down Broadway in broad daylight in relative anonymity. If someone from this board spotted her and asked for an autograph, passersby would ask "Who is that?".
Having said that, I think she would make a terrific Cassie.
"It does me no injury for my neighbour to say there are 20 gods or no god. It neither picks my pocket, nor breaks my leg."
-- Thomas Jefferson