Dorothy: Keke Palmer (secondary: Zendaya) Uncle Henry: up for grabs (no singing req.) Aunt Em: Phylicia Rashad
The Scarecrow: Jussie Smollett (sorry, Chris. Not in 2015.) The Tin Man: Usher The Cowardly Lion: Tituss Burgess or James Monroe Igleheart
Addapearl, The Good Witch of the North: Janelle Monae Evilene, The Wicked Witch of the West: Tichina Arnold The Wiz: Don Cheadle Glinda, the Good Witch of the South: Stephanie Mills*
*though, unfortunately, Zadan and Meron might be inclined to cast Diana Ross as Glinda.