I don't see why not. I love how everyone is just like, "No." I love the clarity.
And come on, you've got to admit that Elphaba is the largest and central part in the show. "Graduating" may not be the best word for it, but whatevah...
Then what about Carol Channing playing Galinda and Elphaba?
Eeeeeeyyyyyyyyaaaaaaaannnnnddddd aaaaaaaiiiiiiiiyyyyyyaaaaaammmmmmmm teeeeeeeelllllliiiiiinnngg yyyyooooooouuuuuuuwwwaaaahh...