Jurassic Park 4 setting?

Okay, ever since the second jurassic park the directors where having trouble with "how can they return to that island again?" And since the New Jurassic Park will be a start of a New trilogy its most likely it wont take place on the same island, but what about a new island? Or a new area of land? But i for sure dont want to see dinosaurs running around a city eating dogs ( jp2) it just makes it really unrealistic. I'd love to see them on an island but maybe not the same one, what do you think? And personally i like isla sorna better than isla nublar because isla sorna gives you the feel that anything could happen instead of isla nublar since the dinos were fenced in. Especially in Jp3 anything could happen, no boundaries:)