Wouldn't it be cool to play maps in reverse?! It wouldn't really have to be ranked, and i'm sure it wouldn't work too nicely on every song, but then again, neither does nightcore... It would be a cool little fun mod for the people who don't just grind pp but like to enjoy their favourite songs and maps in EVERY WAY POSSIBLE. Because let's face it, everyone has that one song or map that they've played in double time, nightcore, half time and auto just just to see what it's like. Reverse would be a nice addition to that.