"Predator really needs a massive open world (or galaxy) game! It's just begging for it. Think of all the prey!"
I'd be in heaven. Random drops of prey like in "predators". And a trophy room, God the trophy room would be exquisite. Setting up hunting camps in the forest. Maybe even getting to hunt other predators sometimes, perhaps an alpha or ones who just chose to dishonor the hunt and must be punished. Endless possibilities.
Maybe a "Valley of Death" mode or DLC. Something like this set one earth that mimics the original film. It's early dawn, you're stalking through the jungle and suddenly hear the sounds of aircraft overhead. You climb to the treetops and gaze out over the valley. A half-mile in the distance, there are Blackhawk choppers dropping in special forces troops. As the first sign of the sun begins to appear at the edge of the sky, you engage your camouflage, and begin the hunt.