While I think the Prequels deserve to be their own full trilogy (and certainly work better as such than trying to cram all three movies into one, though it seems you have avoided that by anchoring the story to RotS and making the rest flashbacks), the novelty alone makes me interested in seeing this edit.
I agree. I don’t hate the prequels, even if they have many problems. I’ll say that I quite like them, cause the PT is the one that made me approach to SW.
My edit, of course, will cut maaaaaany plot points, but at least I hope it is a movie that can be watched alone, by itself, without giving the feel of something that is missing…