Thinking more about Predators and the way it promised so much potential with its hunting preserve planet concept that it ultimately squandered, I really do hope that, if Badlands is set on another planet, we actually get to see a Predator taking advantage of that and hunting some indigenous alien fauna. Predators did basically nothing with the River Ghost creature - I know technically a (very much off-screen) Predator lands the kill on it, but even never see anything resembling an encounter between the two, or even a Predator swinging by to collect a trophy afterwards.
Predator 2 opened up a whole universe of possibilities with all of those skulls on display in the Predator ship (even putting aside that skull and writing it off as nothing more than an Easter Egg), and Prey is a lot of fun in the sequences where Feral is getting a feel for the environment he's in and hunting some of the local wildlife before moving on to going after humans. I know David Twohy's style is something I keep bringing up, in regards to Badlands, but... I'd really love to see something akin to 2013's Riddick with a Predator thrown into the mix, really grimy and pulpy and mean, with some other creatures thrown into the mix on whatever world our characters find themselves on.
EDIT: I've been reminded that it is actually Noland that gets the killing blow on the River Ghost, not one of the Predators. So yeah, the Predators never interact at all with any non-human prey on the game preserve planet where they dump all kinds of prey from around the galaxy to hunt. Cool! Then there's that mining installation that Noland is holed up in, implying the existence of some other sentient race (which may or may not even still exist), but nothing of real interest or intrigue is done with that idea, either.