Wow, that does seem like a pretty good idea. Never thought of it, now I want to try that sometime.
I have two families and I pretty much let them do what they want. The only difference between them is that in the second one they are practically broke. I keep making the mother have kids (they only have 2 so far, though), and I chose as her husband a guy who only brought 46$ with him. They only have 84$ in the bank now. Funny how in my other family, where they have 6 kids, there aren't any money problems.