This is an opportunity for someone to sit down and write homebrew that sifts through everything on NAND/USB and autopatches the filters out, should they be inclined. I think that would probably be the most popular solution.
@Xdqwerty, Osu! Tatakae! Ouendan! is the Japanese version of the game, different settings/characters/songs but otherwise identical mechanics. I played that before I knew about Elite Beat Agents lol. Both fantastic games https://en.wikipedia.org/wiki/Osu!_Tatakae!_Ouendan