You guys are all morons. I would rather have Arnold playing a marine because he is good at what he does and looks good doing it. He fills the beefy marine role perfectly. Vin Diesel and the Rock would also be good choices but ruling out Arnold doesn't make any sense. The Movies are already combined, remember the Alien skull in Predator 2? Bill Paxton was in Predator 2 AND in Aliens. It hurts nothing, he is a good actor and you all need to get over it. Arnold has my vote.