I feel like they're gonna shoehorn LV-426.
If the movie takes place there, that would mean by the end nothing remains but the Derelict. Seems a little too far fetched.
And why would David go there? It's a crappy place even for androids.
Unless it starts out as an Earth-like planet, which would make the total destruction without any remains besides the Derelict even more strange.
I hope he's messing with fans and actually means LV-223.