I think he should survive. 3 Movies and everytime the main Predators die. I just want to finally see one Predator being successful and to survive the whole ordeal. It would be cool to see him drag himself heavily wounded to his ship, get in the seat and just get off the planet.
Or give us an open ending. The Predator is in space, still wounded, he's on his way to his stasis chamber because it'll be a long flight. On his way to the chamber he steps into some sort of gooey slime, it's Alien saliva. Suddenly a hiss from the Shadows. We see the Predator readying his Wristblades and... Cut.
I want a change for once, not always the same ending with the Predator dying. He doesn't necessarily have to return for another Movie, just let him live.