I totally agree, though if it were done as a straight play, I would love for Philip Glass' remarkably haunting score to be kept intact.
This film changed my life - literally. I'm obsessed with it. I love the book, the score, the performances, everything. I own both versions of the soundtrack, a poster, the score for piano, and the screenplay. Obsessed.
"If you are going to do something, do it well. And leave something witchy."
-Charlie Manson