Part of me still wonders if the reason we aren't seeing any post-Aliens set stories on screen just yet (Romulus being pre-Aliens, and Hawley's show being pre-Alien and likely even pre-Prometheus [if it shares continuity with anything beyond the first film at all]) is because they have a "break glass in case of emergency" box at 20th with a Ripley and/or Newt project in it (Newt, more likely, since Sigourney seems totally done after the collapse of Blomkamp's film, she had no interest in even looking at Hill's, and Newt is easy to recast whenever) just in case the current crop of stuff doesn't work out...