Costume Rarity and the Beat Drop
Your rhythm accuracy decides what the reveal is actually worth.
The rarity ladder: hit every step on the beat and the reveal is a legendary costume - the full vampire countenance, the bride with the stitched smile, the jack-o'-lantern with a glowing core. Miss the drop and you end up as a haunted shop clerk holding a bag of cheap hats.
Why accuracy gates the reveal: it mirrors the real format - the best costume walk videos are the ones where the walk itself is performed, not just filmed. The rhythm IS the performance.
The walk card: at the end you get a share card - your costume, your beat accuracy, your reveal moment - built to look like a sticker you can drop into a TikTok comment section.