Fun stuff, but I actually disagree that Star Wars can't happen in the city, or anywhere else for that matter. I think it's more important that it happens in diverse locations as opposed to one location. Star Wars can happen anywhere, on a ship, on a distant planet, in a city (Cloud city) wherever. It's more important to have good character development, not horrible dialogue, good story, other things that make for a good film. :)
The Empire Strikes back happened on a snow covered planet, in a cave, in a cloud city, in a swamp on a non populated planet, in an asteroid field, and on a ship. I worry that Abrams will try to swing too far to the other end of the pendulum after the prequels. "Grittier"