I guess that was a good idea, but on the other hand it's fun to try to be on the top list, as long as follow the "Fair Play".
And how do you intend to beat the top cheaters by playing fairly? On the flip side, how do you intend to make them play fair?
As has been posted already, the leaderboard is a wonderful concept, but scores are unpoliceable and 'fair play' is unenforceable.