Gort wouldn't necessarily be new, it's in Predator 2. But I wouldn't mind seeing it brought back especially if we do have a returning Predator like Jungle Hunter given its connection to his film. But I would prefer if it's someone new if they do something totally new rather than redress old props if they can help it. I like each Predator having it's own identity with its designs. And even if it's a returning character, we're seeing them a couple hundred years prior to when we see them die, they're going to look different and really should.
I wouldn't be against war paints.