Oh but that's the point! It's not at all about serving any one creator's work. It's more like the torch passing. The episode you write is entirely your own. You can change the plot dramatically, add new characters, shift the setting, bend the genre... It's up to each creator how they use the threads if the last. 
It's not soych about the finished process so much as the fun of interacting and creating together too. ^^ SO yeah, feel free to jump in any time. I plan on running it so the chain can keep expanding to allow in new creators and keep the story twisting in unexpected ways. 