If they manage to defeat such a skilled player then they deserve a bonus. I'm not for or against putting up a maximum win/loss number.

With this system it's kind of odd, though, that the inactive people will probably have more points then at least half the people. If people win/lose the same amount then it will average to the starting amount, but they could end up with more points if less then 50% of people win matches, making there more losers so more people under the starting amount. Of course there could be more winners than losers as well, but that would stink for the one guy loosing to everyone. Poor thing.