We do all we can to make games successful and we almost never change a game on short notice. This is because the people who are already signed up for the session have signed up expecting it to be Level X, not Level X+Y, which some might embrace, but others would be uncomfortable with--and it's not fair to force them to endure a game they wouldn't have signed up for ordinarily. And it is very difficult to poll each skater who is currently signed up for the game, in the limited time we have before the session. So we leave things as they are and concentrate efforts on getting folks signed up for the game as it is, not changing things up and trying to get that started.