All I know is it better not kill the trex . That will make the movie unwatchable for me. The trope is tired and dead. The Rex better show up in the water battle and not get killed off to show how big and scary this new dino is but it might cause that’s how every jp movie past the lost world has done it
100%. The new T-Rex looks great, but that isn't enough. It's needs to have some awesome moments of its own, not be a bystander, and not get beaten up by the mutant or another dinosaur.
Ideally, it has no less than two meaningful scenes, kills someone, and isn't belittled in any way. IMO.