"PLEASE, let's get some music legends in this."
Definitely. They're going to have to get some names that people recognize. And they're going to have to cast Dorothy fairly young because when they go in for closeups, you don't want to see a middle aged Dorothy. (That was one of the problems with the movie.)
That's why I suggested Aretha Franklin. Everyone knows her, everyone loves her. She'll pull in viewers because she is a "presence." People of my parent's generation won't necessarily tune in to see The Wiz, but they know Aretha Franklin is mega-talented and they would tune in to see her.
If anyone ever tells you that you put too much Parmesan cheese on your pasta, stop talking to them. You don't need that kind of negativity in your life.