Did you know that expanding and adding more neighborhoods to existing worlds is possible?

I think a lot of people might accept it if they had a warning and it was multiple lots per world added at once. But then you'd get the really nasty people saying that they think Devs are idiots, and also the people who've spent so much time building huge families or are one baby away from a 100-generation challenge or all levelled up to 10. I've lost really nice saves that I didn't have in galleries and it wasn't even the Dev's faults.