*the story will be about Darth Vader. He is the main character, Luke is also very important but not as much as Vader.
*it will probably end up being two movies. The majority of Phantom and Clones will not be present, and huge chunks of the other films will be removed.
*like the test clip, it will be in black and white with new music. we get to see how the images hold up without John Williams' score.
*the films will cut between present day and the prequel series, in a Godfather II-esque sort of way. Luke's father being Vader will not be made clear till the end of the first film.
*there is one death star.
*ewoks are gone. completely.
*Luke and Leia are not related. Leia posseses no force power.
*Vader will have noir narration. Luke could, depending on if i think it's necessary.
*the prequel films especially will use clips from older films of this kind (such as Metropolis, or perhaps Blade Runner) to feel older and less technologically advanced.
I have many more ideas floating around, but those are the ones im pretty sure are going to happen.