Preserving the cultural identity of worlds.

I’ve had this problem to some extent. I like to keep the cultural identity of select worlds like Sulani, HOB, Glimmerbrook or Forgotten Hollow but allow more diversity in the cities. Families that I don’t want MCCC to mess with I mark as played, but it still moves everyone else around. I’ve found mermaids living in Oasis Springs, which seems counter productive for them, and it seems San Myshuno sims are moving everywhere. Every so often, I do a world check to see if anything really aggravating has happened, then I just manually make changes to anything I don’t want. I don’t mind a few undercover random Spellcasters or Vampires turning up in other worlds, but for a while, all of the rando move arounds were Spellcasters. During my world check, I’d use MCCC to humanize them and make them fit the environment. I wish we had more world control in the game. MCCC solves a lot of problems, but sometimes creates others.