Don't allow new world creation. Period. There were a few of worlds created with some unique rules recently, so I can understand how/why they were allowed. What's with this "Sweet Lou" world? How is it any different from countless other worlds that need help filling season after season? Perhaps for a new world to be created, it should be with the caveat that if they have more than 4 openings in either the first or second rollover, the world is disbanded.