I’ve always loved The Wizard of Oz movie (flying monkeys notwithstanding), and I’ve seen Wicked, the musical prequel about the unlikely friendship between Glinda/Galinda the Good Witch and Elphaba, the Wicked Witch of the West, several times on stage. But I’ve always felt conflicted about Wicked because of how Elphaba’s sister, Nessarose, is portrayed. She’s…