I think someone like Neil Marshall is more realistic of getting hired, should a script ever be greenlit again.
I know I'm going to get flamed for this. But I actually think that a guy like James Wan is probably the closest thing we have to a John McTiernan when it comes to action hybrids. I truly believe he could make a good Predator film.
But if I personally could choose just anyone I wanted: Guillermo del Toro, hands down. I'd give him some liberties, even with the lore if need be if he delves deeper into the culture of the Yautja.