Little-known fact about: Alien and xeno skills

I was thinking about an intelligent xeno/protomorph on the new film and about the ability to kill the crew in different ways ever seen till know, do you think this will happen?, something conceived by Scott as an alternative final scene  in Alien in 1979 and droped by Fox. Below the story, more info on the Director Cut comments subtitles. 

http://www.blastr.com/2013-4-2/little-known-sci-fi-fact-ripley-was-supposed-die-end-alien

After shooting the better part of the film, Scott asked Fox for a bit more money to shoot what he called "a new fourth act" to end his movie with. Multiple finales were conceived between scriptwriting, storyboarding and actually filming, with science fiction historian David A. McIntee documenting what would have been the weirdest ending to the flick in his book Beautiful Monsters: The Unofficial and Unauthorised Guide to the Alien and Predator Films. Apparently Scott discussed killing off Ripley in the final moments of the movie, with the xenomorph creature finally catching the heroine and biting off her head. As if that wasn’t shocking enough, the alien would then record one last entry into Ripley’s log by mimicking her voice before the film would fade to black with a sense of haunting ambiguity. The producers considered this conclusion much too dark, however, and would only finance a new ending if the creature ultimately died.