Skateboarding.

[Door]

This is actually a really cool idea! I have played like one skateboarding game in the past (Cuz my friend brought it over) and holy crap it was way more awesome than I expected. Also Sora and I rack up the points hardcore in Hollow Bastion HECK YER.

I think along with customizing your board and its parts, you should also be able to have a matching/custom helmet. Yeah, some people think it's silly to wear a helmet but it actually does protect your most vital organ (You know, that little thing called a brain) and your most important aesthetic feature (your face). Falling off while not wearing one could lose you a good chunk of health, while wearing it would protect your life points. Also I personally think they look cool.