Restricting played sims from showing up on lots outside their world?

I really wish they would set up a distance relationship between all the worlds and set percentages of what sims will show up there.
So a sim from a certain town would most likely show up in their town and the neighboring towns, while distant sims will rarely appear.

It's immersion breaking when you have your Brindleton Bay sim vacationing in Komorebi and then her mother shows up while she's dining in the restaurant I placed there.