I've never seen Jurassic Park but I can't take a movie with giant """Velociraptors""" that are apparently "smarter then most primates" that seriously. This is your movie monster:
THE HORROR
They were also probably about as smart as an opossum. No offense to our Opossum but that doesn't exactly have me quaking in my boots. They might not have even been pack hunters, as there's not a ton of evidence for or against it. Honestly the biggest threat velociraptors would pose would be as an invasive species, not as some horrible, hyper intelligent man-eaters.
I thin it's important to consider cautionary tales but not to take them as absolutes. They're just a
would could happen, not what
will. Honestly I'd be down for cloning dinos (and pterosaurs, which are not dinosaurs). My biggest concern would be treating the animals themselves ethically, as it'd be hard to know the exact needs of a creature that's been extinct for longer then humans have been around - for all we know they might not even be able to survive in captivity.
On one final note I think a lot of giant predators might have a hard time sustaining themselves in modern environments. Imagine if a T-rex somehow got loose in the wild - there wouldn't exactly be a lot of triceratops and out there for it to snack on, so it'd have to try and hunt much smaller and much more agile prey. It'd probably be so unsuccessful that it'd starve to death before it could ruin the ecosystem - I'd be far more concerned about the damage smaller dinos (like the aforementioned velociraptors) would cause. But that's assuming researchers wouldn't be able to track down and recapture a 40 foot reptile in a timely manner. Maybe some larger pterosaurs would do alright though, as a lot of them probably didn't go after large prey, but it's hard to say since the prey they hunted may have still been a lot different from what's around today.