(Transformers: Prime spoilers follow) Whether a fourth movie or a reboot sequel idea down the road, would it be a good idea for the writers to have the core of Cybertron be none other than the Chaos Bringer himself? In the Prime thread "Movie Killer" I read someone saying that the universe behind the Movie continuity is richer than the universe behind the Aligned continuity, because of the comic books and pre-movie novels. If memory serves, the AllSpark wasn't embedded in Cybertron's core, so it could co-exist side by side with a darker core, having collected enough metallic and energon matter to surround it and then form the planet. If it's going to be a fourth movie, much of Cybertron has collapsed upon itself. Perhaps this is just enough to expose the core and awaken the Chaos Bringer, so that he can devour all the fragments left, resurrect some dead Cons, and set up the rest of the story. If it's going to be a reboot, then an abandoned planet would also be good and the Fallen can be the herald.