For Sims 4, I'd like a Create your own World and District Tool, with a set of optional World traits that will determine the world's climate (if you have season's installed) or other unique elements such as dust storms, like in Oasis Springs, but much bigger.
Any of these traits should have an impact on your sim. But for me building roads for cars would be an equally important asset...so ideally cars should come with a tool like this.
EDIT: and Fog. I'd love proper Fog in my worlds. From Light mists to dense, mysterious fogs.
