Jurassic World brought what the title promised - Bigger, badder, more teeth! And at the park! It was a blast seeing the monsters on screen, trashing the park, chasing and eating the stupid people. I do call them monsters, because just like Dr. Henry Wu said, there are no pure dinosaurs in Jurassic Park/World, they're all hybrids, mongrels, and would look very different than they otherwise do.
This is the one line that makes it okay that none of the creatures (especially the raptors) had feathers.
I really felt like most of the human characters were... just too flat. None of their motivations, except for the kids, felt like they had any real weight. The supposed sexual tension between Chris Pratt's Owen and Bryce Dallas Howard's Clair... I just didn't feel it. It was as real as the tension between the two control room techs (which prompted one of the best human interactions in the movie!).
As far as the action goes, it was top notch! Humans vs Dinos, Dinos vs Dinos, Humans & Dinos vs Dinos all fantastic! There were points I was actually cheering the onscreen action, and the final fight at the end by itself was worth the price of admission. Some of the human deaths were really gruesome, and for one character it was a little drawn out as she was passed between a variety of monsters before her final death.
I also really appreciated the references back to the original park, especially since it's the same island!