Although I Find theatrical cut unwatchable the assembly cut is a worthy follow up to Aliens and has some very original ideas that today's sequels lack.
But I would not mind to see Blombkamp's Alien 3².
I think it would be great to see Ripley and the gang again. Concept art was very promising. I wish we could go back to Biomechanical visuals and nightmerish alien creatures and get rid all the Michelangelo/Android in Pompeii nonsense.