Sounds like you are looking at this in a similar way to me; I like ESB and ANH, RotJ is ok but should have been more, and the PT let the side down completely.

I want to rewrite (and hopefully eventually edit) the whole of the Prequel Trilogy, then make very small changes to A New Hope and Empire Strikes Back, then alter parts of Return of the Jedi in order to leave the story more open to the sequel trilogy which never happened. I may then write stories for those but I think any sort of edit would be impossible due to lack of footage (and to be perfectly honest my PT edit ideas are already difficult enough).

That being said, I think the best thing to do is throw some ideas out there and see what people think. Normally throwing out ideas will get more feedback because more people will read brief ideas that a finished script, and people are probably more up for chatting about an idea than ripping apart a script you spent a lot of time on, so yeah, share some ideas and I'm sure people will join in.