Haven't the foggiest idea if this has been done before, or if this would work, or anything really, as I have done about zero in this section. That said, what about a collab-based contest, where groups make a long roleplay from their own point of view, which is then edited into a story that is based on the perspective of one character while including as much from the others as possible? Basically, a story written by various people post by post which is eventually turned int one, big, easy to read story with chapters and the like.