Thanks so much for sharing this. It's fascinating. I'm to the part when they're returning to LA after getting Piggy. My biggest problem with the movie was that I have a hard time swallowing the Muppets being broken up for any length of time. Reading this, with actual animosity in the group and fighting that continues after they get back together? Uch. Sort of gave me unpleasant cold chills.
I think there's a thread on here somewhere called 'The movie could have been so much better,' or something similar. This script could start one called 'The movie could have been so much worse'! I'm so glad that everyone came together to make a really GOOD movie out of this.
That said, there are a couple of gags that didn't make it to the movie that would have been cute/funny.
EDIT: Heyyyyyyy. Rizzo had a LINE in this script!