I really think that the Jaws/Amity area will be a "London" area with the Leaky Cauldron leading into Diagon Alley. In Diagon Alley there will be Gringotts (roller coaster ride) and maybe a way to get to King's Cross station where the Hogwarts Express will take you through the Uni backstage right upto Hogwarts castle. It will be an unreal experience.