I've put up two suggestions on the suggestion site, the one being a dynamic start (people start as soon as they join, until the end of day 1), the other being adding a tutorial.
If you've gone through the tutorial and finished your actions but don't want to play the game any further, what do you think about an option to "resign", thereby making the family available for another person (only applicable for dynamic start)?
Just thought that I would kick it around here before first suggesting it.
I have a feeling that giving people the option to kick themselves out is generally a bad idea, but I'm also thinking about the welfare of the remaining people dealing with newcomer inactives.
