Preserving the cultural identity of worlds.

I wish there was some way to influence neighborhoods and lots in this way. I only notice it when I'm in Glimmerbrook and especially on the secret magic school lot where everyone can show up and just kind of reads books there or hang around. I would like to have some kind of magic barrier that keeps out human Sims who have not been invited by the mages to the school, or even the world itself. Other than that, I've never really thought about it much until Tartosa. Because this is an island which feels kind of like a vacation world to me, I imagine it very far away and I'm not used to seeing Sims from Outdoor Retreat or Selvadora show up in the other neighborhoods, so it kind of takes the distant island feel away if the Sims from there are always hanging around Willow Creek. I think of the other neighborhoods as being close by each other so it makes sense they can visit each other's worlds. It would be fun to make really unique worlds though, especially supernational neighborhoods or historical neighborhoods where everyone is wearing the same style of clothing or places like Tartosa where the Sims don't leave the island autonomously.