As someone who doesn't really like rhythm-games: This one is a lot of fun, and the soundtrack is one of my all time favorits! Almost a shame that development is finished. This game would be very dlc-friendly, and I would be happy to buy more content.
Edit: I do have one question though: Do the buffs that can be bought with Gold Reputation in the Gauntlet Shop count for the entire game, or only for the Gauntlet itself?