I'm not sure about it myself. The big croc looks good, but it does feel like they are scraping the bottom of the barrel a little. Now, if they reference this knowingly it could work, but the dinosaurs in Jurassic Park worked well because they were depicted as animals. It made the unbelievable almost a reality. Trained Raptors are a novelty, but it does cheapen them and pushes this into pure fantasy. Maybe it is a reflection on society - on what some of us expect out of films? I'd bet the kids will love this, but the adults will feel a little cheated.
One thing though - the dino roar near the end, why the hell does every loud sound now need some type of robotic stutter to give it gravitas?