I saw the movie when it was originally released, and recently purchased the DVD to show my teenage sons. I was upset when I discovered the DVD was missing the whole pregnancy issue with Gwen Verdon's character, and much of the discussions between the characters about why they should or should not go with the aliens. I would have at least expected the DVD to contain the deleted scenes. I encountered this before with the movie BIG where they changed the ending after the initial release, and didn't include the alternate ending on the DVD. I would think when a DVD is released, they should at least include deleted scenes and alternate endings for the people who saw it when it first came out and enjoyed the version they saw. If they had been true to the original version I would have given it a ten, not a six.
