I would invent a complete new genre...
I hope developers from other firms will not read and steal my ideas
The JP game i would like to see is about to survive as a dinosaur (carnivore) hatchling. You have to hide, you have to hunt, you have to drink, you have to defend your nest/ territory against other Dinosaurs. The longer you survive the bigger you get. As an adult you have less enemies. You can threaten other smaller carnivore dinos (to get their prey) or you can hunt bigger herbivores. You can also pair with the opposite gender and give your genes to your offspring (and play with one of them after you are dead).
Social animals like the Raptors can communicate and hunt together. The adult T-Rex has no enemies so no fears.
The game takes place on the Isla Nublar. You can see many known places like the visitor center from the film. There is also a day and night system.
just a little sneak preview of my idea.