Anther sequel to a movie with a perfect beginning, middle, and end? What in the world is this about?

The Jim Henson Co. has set Genndy Tartakovsky to direct Power of the Dark Crystal, sequel to the 1982 fantasy film The Dark Crystal, Variety reported (SciFi Wire).

The villains were defeated, and the world was healed! There is no where for the story to go! Are you as sick of this as I am? Bambi 2 tipped the ice berg on these foul sequels. I hope the creator of Samurai Jack, Dexter's Laboratory and Star Wars: The Clone Wars can think of an original story.