Things like, say, Christmas Bells or Contact were too theatrical or "stagey." They probably would've looked odd on film, or have just not worked very well.
I liked a lot of those things about the original script, but that one was so different from the libretto. It sounds like what happened in the writing process, before they even thought about ratings, was that the script just morphed into being closer and closer to the libretto.
Images in the version of the movie that actually came into being that were cut because of the MPAA are like, a few frames of a needle actually going into an arm. The sex scenes and all never appeared in that shooting script.
They *expected* to have the movie be rated R.
A work of art is an invitation to love.