What disappointed you? I have not paid for the game (yet), but I have played the beta, and I found the dinosaurs impressive.
So impressive I took some screenshots.
The dinosaurs do look nice but it felt a bit weird controlling them. There also doesn't seem like I receive proper feedback when I attack the humans. The main draw of the game for me was being able to play as the dinosaurs, but I realize it will just be chaos with everyone rushing to the dinosaur team and people in the game complaining that they have to play as the humans. Overall, I don't find it that much fun, and I don't see myself playing it for long. Watching it definitely looked more appealing than when I finally tried it out.