Deathdrop,
Yautja,
12 years ago
It would be pretty interesting if the only characters in the movie were Shaw and David, though. Imagine them, alone on a completely alien world. Talk about claustrophobic.
And since David watched Shaw's dreams in hypersleep for who knows how long, he would really know what makes her tick. Hell, he knows more about her then her own husband did, and she has no idea whether or not she can trust him.
And yet she can't get rid of him, because he'd be her only way of navigating the planet (which may or may not be empty).
There could be all sorts of flashbacks to her life as she works her way through this completely alien, unnatural environment, maybe even starting to crack under the pressure, maybe even hallucinating occasionally. You can imagine what her dreams would be like.
I'd also like to see them utilize that holographic recording trick from Prometheus again, because I'm a sucker for seeing the same place at different time periods.
As for the Xenos... They should be left alone. Maybe framing scenes at the beginning and end where a WY team searches LV-233 for signs of what happened only to meet the now-fully-grown Protomorph.
Get Giger to design some weird shit, find a better screenwriter (maybe the guy who did "Monsters," which was quite good) and you'd be good to go.