The Housing Market on Extended Games
I have noticed a solid shift of lack of progression in the long game. When your sims are thriving, other sims seemed to have either died, and replaced by default CAS generated sims. The problem is tho...
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Personally, I just move them in manually, in from Manage Households, as I found that the game doesn't move Sims in very much on its own regardless of the setting -- only very early in a save. Another option is to use the mod suite MC Command Center's option to fill houses. It's very effective. You just tell the mod how many houses you want to leave empty.
