This was the only thing I could find at the moment:
QuoteFact: The original concept for Alien 4 was to claim that Alien 3 had been Ripley's bad dream during hyper sleep in an attempt to appease the fans.
From this article:
http://notanothersequel.blogspot.com/2012/03/most-hated-sequels-1.htmlBut I remember reading from several different sources that A4's writers toyed with the idea of making Alien3 Ripleys bad dream in hyperspace because the studios wanted Ripley to return and they were having such a difficult time figuring out how to do this.
If you google, there are actually an insane amount of crazy observations made by fans about all of the dreamlike shit and symbolism in Alien 3, from Newt 'drowning' to the Nostromo flight recorder on the EEV at the end, which wouldve most likely been impossible, and many other things.
I could be wrong, but I'm pretty sure I'm not. Interesting theory, never the less.