So you basically want a "mini-game" to become a class(job) that doesn't even resemble a class or job. And then attach PvP to it? lol... half of this community would fly off the handle and it would most likely be poorly received.

The best we could ever see of a snowboarding/surfing "mini-game" in this game would definitely be in the Gold Saucer. And honestly something like that is where that should stay impo.