I'd reeeeeeallly like to be able to recreate Moonlight Bay from Sims 360, but I don't want to mess with unstable world clone mods. Maybe Maxis will drop a create-a-world near the end of Sims 4?
Never. They have already stated years ago that building TS4 worlds is more complicated than before, as if players couldn't handle it. I doubt they allow them to tinker with any of their developing tools.