Movie producers, as you might know, don’t really care if they have an original idea or a good script. The only factor that matters is the money making ability of the film. Jurassic Park 4, believe it or not, was almost made a few years ago.
Back in 2005, William Monahan and John Sayles wrote a script for Jurassic Park 4 in which a secret genetics lab has been cross-breeding humans with dinosaurs. The result is an army of grotesque and intelligent humanoid dino freaks with problem-solving intelligence and the ability to fire automatic weapons. Yeah. Their storyline was scrapped but it apparently got much farther along in production than anyone realized.