Clicking on it only changes the filter. Don't act like this is a feature that the people want. If I have the highest score of all the mono players on a song I want to have the mono throne! Why have you been ignoring players requests for years?
When I get the highest Pusher Score, I want to get the Pusher Throne! When I got the highest Pointman Score, I want to get the Pointman Throne! When I got the highest Mono Score, I want to get the Mono Throne!
Oh wait, I could just change the filter and see that I do have the Pusher Throne after acquiring the highest Pusher-score.
Really, the scoreboards show you the top 10 of the registered scores on this song. If you want information on a specific character, you change the filter so that you only see the character you want.
As you probably don't know, there have been an aweful lot of Erasers lately. I'm a Pusher, sometimes Pointman-player. When I get a good Pointman Score on a song, but the top 10 consists solely out of Erasers because Pointman can't compete on that song, I just change that filter to find out if I'm the best Pointman that has played that song or not.
I'd miss the filter if it weren't there - it is thus a feature people want, assuming that I am a part of "people".