I'm a huge fan of Godspell, and a bit of a junkie in collecting memorabilia and researching the original producion(s).
I actually think that the score never sounded better than it did in the movie and I loved that the entire cast was made up of people who had appeared in the show. Robin, Jeffrey, Joanne, Gilmer and David were from the NY (original)cast, Victor was from the (legendary) Toronto production, Merrill was from the Chicago company Jerry and Lynne were from D.C. and I *think* Katie was from Chicago also.
I think that staging the movie on a bare stage a la the stage production would have been strange, and think that opening it up to NYC was brilliant. I know it was mostly shot in the wee hours of the morning because if you watch the film, you never see anyone but the cast except during the opening and closing credits, and I think it's really fun to see such recognizable areas be so vacant. To me it always seemed as if the director's view was that once the diciples found and decided to follow Jesus, the rest of the world slipped away and when he dies and sends them forth, the world reappears.
Long way of saying, I really liked the film.
"Y'all have a GRAND day now"