I have been playing some Project Mirai DX and Project Diva recently, and have been thinking how cool it would be to make your own maps. I believe that this would be a combination of Taiko, Osu!Standard, and Osu!Mania. I feel like this mode would be able to incorporate other songs besides Vocaloids. You could possibly adjust the mode to be like the Playstation one, or the 3DS one. Just an idea to consider! 