If I was an actress/singer, I would hate to play Elphaba. Yes, she's a big and very coveted role, but I've heard so many horror stories about women blowing out their voices playing the part that I would be a bit turned off from it.
I think young women should wait a bit before trying out the part, so that way they have some time to let their voices mature a bit and get their careers started.
"Was uns befreit, das muss stärker sein als wir es sind." -Tanz der Vampire