Details on the many cut scenes

Boy, wouldn't it be great if some of this footage surfaced on a 50th Anniversary Special Edition newly scanned blu release next year:

Crichton explained how he re-edited the first cut of the movie because he was depressed by how long and boring it was. Scenes that were deleted from the rough cut include a bank robbery and sales room sequences, an opening with a hovercraft flying above the desert, additional and longer dialogue scenes, more scenes with robots attacking and killing guests including a scene where one guest is tied down to a rack and is killed when his arms are pulled out, a longer chase scene with the Gunslinger chasing Peter, and one where the Gunslinger cleans his face with water after Peter throws acid on him. Crichton's assembly cut featured a different ending that included a fight between Gunslinger and Peter and an alternate death scene in which the Gunslinger was killed on a rack.

Once the film was completed on time, MGM authorized the shooting of some extra footage. A television commercial to open the film was added; because there was a writers' strike in Hollywood at the time, this was written by Steven Frankfurt, a New York advertising executive.

https://en.wikipedia.org/wiki/Westworld_(film)