Is there Still Hope For a Create-A-World?

I think that if there was a Create-a-World Feature, there would have to be something similar to gallery sims and builds. Depending on the types of tools used, it may be harder to make what you want - similar to the terrain tools. They're hard to use sometimes and can be finicky so there would have to be a way to get "bases" that we could manipulate to be what we want to play in.