The Bourne Identity
Jason Bourne could have had a nice, normal, happy life with his beloved Marie. Unfortunately, that’s not what happened in the final flick. Execs decided to give the guy one more tragedy, sorry Marie! there was also a version that made the whole movie a giant flashback, but this was obviously scrapped. A little too cliche for 2000s audiences, plus it didn't pave the road for any sequels.