Whatever this "new world" is, even if its the homeworld I'd be fine with it, so long as it actually "looks" like a new world. One the biggest flaws with Predators was it NEVER looked like the characters were anywhere else but on Earth, and when we do see where we're supposed to be, the effect is almost laughable rather than convincing. Ok so it wasn't a large budget movie, but if Ridley Scott could do it for Alien, then surely anything is possible these days.