I don't know why so many of you worry about the progression, and where the sport is heading. Who cares if the sport is plateauing, there will still be parks and there will always be natural features on the mountains for you to ski and progress your OWN skiing abilities on.
Just look at rollerblading, the sport is dead in the publics eye, but there is still countless people out there pushing themselves and having a shit load of fun doing it.
So, instead of worrying about trying to figure out where skiing's headed, just ski and enjoy watching ALL the new directions and styles it will head in, as it will always continue to change. There is no point in getting all worked up over changing tricks and styles as it is bound to happen and complaining about it won't stop it.