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?
Neighborhood editing tools was once a part of a survey with Town Life but I'm guessing it was to hard cost to much and because of that it was scrapped.