I thought it was really cool until the dinosaurs showed up.
Despite the hist inaccuracies, which I can overlook, what bothered me most is how EVIL the dinos are. There shouldn't be much of a difference on how a top predator from then and a top predator from now would act. If you shoot in the general direction of a bengal tiger the animal is going decide hunting you is not a good idea, and I'll likely to run away no matter how hungry he is. Here the dinosaurs seem to be able to dodge bullets and smarter than their human prey (not to mention that they should not be able to recognize a mutant as prey since we would smell and look unlike anything they are adapted or have experience, but I can forgive that as a technicality).
The dinos also look really fake, which doesn't help their case.
Other than that I think it is a great concept. I like the characters and the character dynamics. So I do have hopes for it now that the next few episodes won't have as much CGI due to lower budgets and thus having to recur to suspense and not showiness. Meaning that they'll be following spielberg's original formula of not showing the shark.