I've done The Wiz a few times - it's always so fun.
About the Design
So what if we moved the audience... Yeah, the audience moved in little pods - they started in prscenium, and gradually the audienc eunit broke up into a completely different theater. And the band moved too.
How many sound systems can you hang?
The answer is a lot. Chad Parsley (co-designer) brilliantly built a sound system taht took zoning to the extreme. Entire parts of it would turn on and off depending on where the audience was.