Re Jane Krakowski: Allegedly, during the initial workshops of the show she said "I can't say this, it's sexist" to which Neil Simon replied "You won't have to." I truly admire her for not wanting to be part of yet another cultural artifact that demeans women, it is called acting but if she did not agree with the politics of the show then why should she endorse it by saying those lines? It's the same as a gay man working in a homophobic play, etc. And her role in 30 Rock actually mocks that ideal of the typical blond "sexy" shallow actress, it's a self-referential, self-mocking role, it's not supposed to be taken seriously.
About the changes that were made. At first I believe the opening notes of the overture had been cut, two trunk songs had been added, "You Should See Yourself" and "I Love To Cry At Weddings" were cut, the neon signs and fairy tale-ish sense of the show was changed, and most importantly the ending was completely altered. By the time the show got to Boston, the opening notes of the overture and the cut songs were put back and one of the trunk songs was gone. This is what happens when a creative team decides to take a piece that is closely identified with a director/choreographer and tempers with it which is why John Breglio is so protective of Michael Bennett's legacy.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"