I wouldn't mind if they were removed. It seems like no matter what is done to make them seem accurate, there's always people there to get past it with their boosting and alternate accounts. When it comes to the sparring leaderboards I think there is also a disincentive to participate when you're high up on the list, which isn't really the point. I can't see it being done though; too many people play solely to have their name in lights.