I just stumbled upon an interview with Dan Connors from e3
that I don't think anyone's posted yet. It features this interesting quote:
For the Jurassic Park adaptation the search is on for the ‘superstar’ dinosaur, a creature that can ‘haunt’ a scene like the Raptors of the first film.
It sounds like they're looking for a different species to replace the raptors as the main "villains" of the story. Hmm...