I have Neighborhood Stories turned completely off, and I also didn't allow random sims to move in before it came along, so the new change won't affect me personally. However, in case some of you are unaware, one thing you could do to take a bit more control over the housing situation is to go into build mode and set the number of beds to 0 on houses that you want to reserve for your played sims. You don't have to actually take beds out, but setting it to zero tells the game "There are no beds here," and it won't move sims into those particular houses. I used to use this method when I did allow move-ins for a little while when I first started playing. But later I stopped allowing move-ins at all because I'm absolutely greedy about my houses. ;)