An idea that popped into my mind just now. Let's say that Unicron shows up in the third movie. Now I don't know about you, but I do not want to see a Dark God, or the way he appeared in TFTM. So here's the idea I have. Most of us agree that the Decepticons need to find a way to suck our planet dry of it's natural resources. But here's my idea: Basically, the Decepticons will do two things, depending on the situation. One: They establish a colony on the surface of the planet, making it one of their many bases. Two: They get pissed off at the native species or deem the planet unsuitable for colonization, and bring in the Planet Devourer. In other words: Unicron would be the ultimate Decepticon weapon. A massive ship that's the size of a small country or a large city, which contains a small star (which stores the stolen energy) in the very center. It sucks a planet dry of energy (for example: doing something to the earth's core and turning the magma into rock), and then leaves with the rest of the Decepticons ships. The captain of this ship could be Unicron himself, who is merged directly with the Planet Devourer itself. Normally he would be a supercomputer-esque thing in the form of an orb, but if the situation calls for it, he could transform to robot mode. As for the appearance of the Planet Devourer: It could be an altered version of TFTM Unicron. Instead of having the shape of an orb, it could have the shape of an egg, with the two large claws and 'mouth' at the front, and the classic ring (with the 4 poles attached to the object and the rings sweeping backwards a bit). When it nears a planet, the rings unfold into giant tentacle-esque objects which drill into the surface of the planet, stabilizing the Planet Devourer, after which the two horns dig into the planet, creating a large and very deep hole in the ground so that the 'mouth' can start sucking it dry, using an exatraction system that's similiar to a black hole. I don't know what kind of role it could play in the third movie, though. Maybe it's just a weapon showed in an Autobot flashback, warning the humans that unless they stop the Decepticon invasion, that's what could happen. Or it could be brought in during the last hour, with the final battle focussing on a daring new plan of the Autobots to infiltrate the Planet Devourer, hijack the ship, and then send it back into deepspace on a suicide mission during which Prime (?) uses the Matrix to overload it's systems and destroy it from the inside out. What do you guys think of this idea?