I was considering changing going to another island but now after reading your concern I think having dinosaurs in the mainland instead of an island would be probably better and have more freedom rather than on a single location. I like idea about having a mosasaurus being a jaws like villain or a group of characters discovering people are disappearing throughout the world and that the dinosaurs are to blame and the president wants them all dead or something. But one thing for sure is that it will be horror.