Well I think most of us would agree the prequels never had to exist. This would just be about telling the story in an interesting way that provides an alternate (aka better) take for those who despise the actual prequels. Basically, get a fan re-writer, a fan filmmaker, and a faneditor together, have them discuss what the story should be, get a plot outlined, have the writer do a rough draft, have the other guys make notes, repeat till happy with the story, filmmaker shoots it (with others present), editor does a 1st edit, shows others, make notes, repeat till happy. It would be nice for them to have different views as to what the prequels should be so that there is some variety and it doesn't repeat the main problem the prequels had, which is that Lucas did the whole thing in isolation. Nobody gave him story notes on what didn't work, nobody once said to him "hey, George, this sucks." Part of what made the OT so good is the amount of collaboration between George and other really talented individuals. Obviously nothing is going to satisfy everybody and the prequels don't HAVE to exist either way, but it would be nice to have a version that doesn't suck nonetheless.