One thing that would be nice to be implemtend is a replay for the country top score (Less replays per map but still some). Getting on the top50 of a song is really hard and sometimes you're mainly competing against your country players (yes, this implies supporter is required), this something that could increase competition between players of the same level and make players try harder to reach that top since it will be more reachable. (Also more people buying supporter =P).