The original script of INS changed considerably to what the final product turned out to be. Rick Berman said Piller submitted it and it was one of the darkest things he ever read. I believe the original title was to be Star Trek Stardust back then. Piller and Berman set out to make it a softer story. Stewart and Spiner also had input into INS.
I believe INS was changed too much. Piller originally wanted to do a Heart Of Darkness story with Picard.