Jodorowsky's Dune
Tim Burton's Superman Lives
Jason and the Argonauts 2
Vincent Ward's Alien 3
Del Toro's At the Mountains of Madness
George Miller's Justice League
Peter Brigg's AVP
Whedon's Alien 5 (set on Earth)
Dredd sequels
Vampirella (from Hammer studios in the 70s)
Alex Proyas Dracula Year Zero
Xtro 4 (the director was talking about this a few years ago but have heard nothing since)
Killer Klowns from Outer Space 2
The Strause Bros AVP 3