We all know they planted the seeds for 3 and 4 being a dream back in '92 - the Sulaco logo magically turning from black to white, the complete redesign of the hyper sleep pods - all just constructs in Ripley's head
Say, wasn't the sleep pods the same design from the Nostromo in the first film? Because they do look quite a bit alike.
Supposedly David Fincher liked the design of the pods better in the first movie so he chose to go with that instead of the more industrial strength pods seen in Aliens, a stupid decision in my opinion but then I didn't much care for the changes that were made to the aliens themselves from the first to the second movies. It would be nice if directors of sequels would concentrate on the story and characters and leave established designs alone.
Also, from what I read, Fincher actually wasn't involved with the pre-production phase of the film, but was brought in shortly before the shoot and he left after the production completed filming. This means he had no involvement with the production before or after he filmed the movie, thus the designs were not his (I suspect they may have been signed off by Vincent Ward back when he was in the director's chair, which includes the sets being constructed back when the story was originally meant to take place on a monastery planet per his original concept that was greenlit by Fox). But, like I said, that's what I've read and could be wrong.
Plenty of not so good ones here.....
http://www.rottentomatoes.com/m/chappie/
30% rating so far doesn't forbode well.
I'm not sure that any conclusion can be drawn in regards to a new Alien film based on any of this, to be honest.