I think that Sigourney would never come back to the franchise after that abomination of Alien Ressurection. The movie wasn’t that bad, but the ending with the Alien queen having sex with Ripley and making that half alien/half human hybrid killed the movie.
I’m actually really glad to see Ridley go in a different direction with this movie then do the typical studio re-boot. Not to mention I heard that if the studios okay the R rated cut then people are going to be able to see Charlize Theron doing naked push ups :wow