It is quite difficult to reach the higher rankings in some games. Some players, who certainly deserve their ranking by playing well within the years, are very alone on their top rankings.

How about changing the BKR system in order to get more movement in the rankings: Lets look for example at the ranking system in professional tennis: The points you earn count for one year and not forever. This makes sure that players are on the top, who play well and who are doing it "now"... .

This fearute would encourage more the players who play much and who want to get to the top, even if they are not as "experienced" as the long-term-best... .