I would think adding the ability for user to choose next scene of flash movie, like choose your own adventure, or some twist on that would be interesting. Maybe upon upload of a scene into the "master core", the user/contributor will be allowed to progress to a new scene or have blind choices or something to that effect. In order to move within the movie, you would need to add a scene...hmm..that would be luring to me...not being allowed inside until I had a scene created to submit..and based on maybe a snippet reel. User gets to see quick flashes of movie and then have to base their creation on that input. Now I am getting into scientific, psychological art.