I think inviting people to an event like this is an art, especially if you want it to cover the whole range of what could be done.
There should be a few elite skiers, filmers, and photographers invited, for the more serious side. Then there should be a crew invite; invite people like 4bi9, (Clown School if it was still around), Hot Possie, The Hood Crew, The Traveling Circus, whoever else comes to mind, and they will bring less "elite" skiers, and their own filmers. Then, these crews will all (hopefully) come out with their own edits from Superpark, with whatever spin they choose to put on it. I really don't think it should be a contest, either. Just make it so that these dudes get a chance to go shred and film and have an awesome fucking time if they put an edit out at the end of it. Finally, from here, the elite filmers and photogs can capitalize on the skiing done by the crew invite skiers, as it will hopefully be a little different than whatever the elite skiers are doing.
I love the idea of a Ski Superpark. Snowboarder Superpark is one of my favorite things ever, so this thread has just gotten me all amped up.