I totally agree, its just a great idea and it makes songs really fun, allthough i h8 double time, it makes me playing this mod.
So i would also like to see a nightcore mod in the mod table, off course not multipliing the score in any way, but also not making it unranked^^
i would also enjoy a second mod doing the same without double time or even a unranked mod which lets you choose the songspeed maybe and also pitching them up and down as you whish, only to play round with it, but i guess that would be to much od modding for now as it wwould be the first mod with regulable bars and it would may so need a own menu
Oh and i also really love the metronome-drumkit-effects, they would be as optional mods or adjustments in optiones menu great, too