While I was not privy to see it, a friend in the cast sent me the revised script, and the only moment I liked was the moment between Dorothy and The Wiz where she repeats his words about home after they unmask him.
When you take away the Tornado Ballet, the Yellow Brick Road dancers and the Emerald City Ballet, you loose very visual elements. The introduction of "Ease on Down the Road" at the beginning was pointless, and the addition of contemporary things "We're gonna vacation in the O.C.?" were distracting. Transforming Addapearle into a scatter brained idiot weakened her, and the reprises of the three friends songs fell flat.
However, worst of all was the disruption of "Home" by having Aunt Em and Uncle Henry come on at the end before she finishes singing. KILLED the emotional impact.
Des had in his hands a very potent property, that some updating could have really done well, however, I think he really screwed it up.
The original staging, what I have seen, what I have read about and what I have been told about was nothing short of a masterpiece. Admitedly, I did not see either production, being born in 86 kind of eliminates the original production, but I feel safe in my decisions about the La Jolla production.
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