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

I wouldn't want the sims I make to be restricted to their world. I place my sims in different worlds because I want to play it all and if I could only see the ones from a specific world that would defeat the whole purpose of keeping lots of my own households in the same save. I do wish they would look over the coding for when/ where sims show up though. It's usually the same sims (along with townies).

I'd prefer if they would tone down the random townie spawning with jobless sims with no purpose just popping up everywhere to then never be seen again and replaced with yet another useless specimen. Like why generate so many unemployed sims?

I do however see a point in maybe restricting sims from some worlds a bit. Like Sulani sims walking around Newcrest in winter with their warmer cold weather outfits looks a little off.
Same with preemade celebrities strutting about in the poorer neighbourhoods (Like were Johnny Zest lives for example). The Cho lady and Ward are everywhere, maybe that's their secret to stardom? You can't miss them cruising.