Ridley will hold onto it forever. Unless he gets to make the movie, we're never going to know.
I'd like to see it all play out in the EU. Heck, I'd read a novel version of Neil's Alien 5. Crazy ideas seem to come off better on paper anyway.
What I'd like to see, for starters.
David/Shaw Novel "Journey to Paradise".
"Alien: Awakening" Novel
NB's Alien 5 novel
Novelizations of Gibson, Twohy, and Wards Alien 3 scripts
Another full length Alien audible drama
A predator audible drama
AVP: Prey audible drama
Sequel novel to Predators 2010
Official Predator 3 novel
Tv series based in the Alien universe
Sequel collections to "if it bleeds" and "bug hunt"
An original novel detailing the events of a xenomorph infestation, as told through survivor debriefs (in the spirit of WWZ).