I've read much of the script, haven't read the whole thing but have skimmed through it, and there are a lot of great things in this. Pepe gets more lines, Rizzo gets a line, I like many of the triple-cut-aways and flashbacks. I kinda prefer the way this script got the Muppets back together, as a signal instead of traveling, if only because in the movie, Kermit acts like they've got everyone when there's only a small group of them in the car there, but in this script, that behavior occurs in the mansion, where many could be in other rooms and still have it seem as if almost everyone is.
Though this script doesn't give a sense that a lot of obscure characters are there.