Back to the topic: in regards to the title change - to be frank,"Skulls", especially now in retrospect, sounded a little silly to me. I get the connection to Predators but all I could imagine from hearing it wss an image of cartoony skeletons dancing. It sounds more like a code name for the movie than an actual title. Like, what is this movie supposed to be about judging from the title ? About bones ? About human body parts ? About maniac surgeon gone on a killing spree ?
What I'm trying to say is that "Prey" IMO is much more related to the whole hunting theme (which is what Predator is about, at its core) and better at conveying what the film is gonna be about