I think this is a practically perfect edit. Padme doesn't get enough to do in ROTS, especially in the first half, and that problem remains in this cut. I can understand SiliconMaster's decision to leave her subplot out, as they can bog an edit down and (unlike some) it still clocks in at two hours. A fan can always hope for an Extended Edition, right? A lot of the changes I barely noticed until I went back and compared, as they're so subtly and well executed. (unlike order 66 — too soon?)
This rendition is the definitive version of Revenge of the Sith for me. I could hardly tell I was watching a fanedit, and the changes made make this a movie I'd watch again. It serves as a great lead in to the OT, and makes the other two prequels more watchable given this as a conclusion. In particular, I watched this as part of a machete order (4, 5, 2, 3, 6) viewing of Star Wars, and feel this set up Return of the Jedi brilliantly.
The pacing of the edit is excellent, never getting dull but still allowing for some quieter moments.
There were a few moments where cuts were somewhat noticeable. They were not prevalent nor were they noticeable enough to significantly detract from the film. They may have been noticed simply because I was expecting the lines from the original cut, not because they were egregious. I'm waffling between a 9 and 10 for both of the editing ratings, and am just erring on the side of caution.
Siliconmaster's take on Episode III tightens everything up in the best way possible, I viewed Version 1.4 for this review.
All of their changes are well thought out and expand upon choices that were very successful for others. The attention given to the editing makes for a strong seamless viewing experience. I can't even begin to express how much I appreciate their changes to do with the Mustafar fight, it just feels so much more satisfying. Siliconmaster goes above and beyond with this project. It will be replacing the original release's blu-ray on my shelf at home.
Somewhat off topic but while reading through the special thanks section I learned that HAL9000's releases have fan editor commentary tracks! Will have to check those out.