I don't think the video game footage would quite fit with the film. One of the ideas of this edit is to do away with as much cg as possible, adding in video game quality 3d models might not be headed down the right track. Of course, I myself have not seen the video games footage so I could be wrong. I was thinking, the novel of Revenge of the Sith by Matthew Stover is pretty good. It adds alot more inner monologue to Anakin and his reasoning of things. While it is pretty true to the film, it translates more realitically than the movie. All of Anakin's thoughts as he turns to the dark side are written out for us.

One example of this is when they are climbing through the elavator shaft Palpatine is afraid of falling and asks Anakin to give him his hand, which is what is holding Obi-wan while Palps hangs from his leg as Anakin hangs on to the shaft with his other hand. Anakin thinks to himself that the Chancellor must not be thinking clearly because all the stress and doesn't realize what he is asking Anakin to do by letting Obi-wan fall. While in the movie when Palpatine says leave him, he has been knocked unconscience and can't possibly survive, Anakin just says, no we are not leaving him, while the audience thinks what an idiot Anakin is for trusting and caring so much about a guy who would ask him to leave his slightly injured best friend/father figure for dead.

I bet some decent dialogue could be salvaged from the book. It is actually quite impressively written. To me it feels more like reading a classic rather than a sci-fi novel. And for me that is a big deal to say because I usually only read classics anymore and rarely ever read sci-fi. The language and explaination Stover using is for the most part fantastic. At points it falls short due to the fact that it is based off one of the worst screenplays ever written, and also sometimes he tries to put in some odd humor that just doesn't fit.