I'm sorry if it's been brought up, I would like to see some form of Unicron in the third movie. Not as a planet or a moon sized transformer because somthing like that coming within earths gravity would just destroy the planet. More like a skyscraper size, bots & cons could still be jumping on him all over the place trying to kill him and it would still fit in the scope of the first movie. Way better then seeing tidlewave like Bay wanted I think. He could come to earth as a huge spaceship shaped somewhat like the original Unicron. If they want Galvatron as a seperate character, Galv's could show up at the end of the second movie to signal his coming (or even better scourge or cyclonus) The second movie could end at the climax of a huge battle, (Galv/scourge or cyclonus) yells and everyone looks up to the sky to see the sillouette of Unicron in the sun. Third movie gets off to a running start.