For those asking about Act II and it's visuals, I know only this (and I found this in a set design book 4-5 years ago):
They used the doors around the back in a curve. In the center, at back, was a grandfather clock. In Act II, doors became unhinged, the paper peeled away from the wall and the grandfather clock broke down.
The ugly witch looked rather a lot (to me) like Strega Nona from the Tomie dePoala series, only with a witch hat. When she transformed she looked (costume wise) a bit like the Wicked Witch that Debra Winger played in the Oz Concert in 96.
Honestly, I think it's brilliant, and I *wish* more survived.
http://www.youtube.com/huskcharmer