While I think everyone has a right to make whatever fan edit they want, so many of them are just the same movie with deleted scenes cut back in, it almost seems pointless. Just because it's different, or longer, doesn't make it better.
Wanting to make a new version of Blade Runner just because the Final Cut wasn't different enough doesn't seem like the right motivation. Remember, fan edits started when the Phantom Editor saw Episode One and thought, "Despite all the bad stuff in that movie, I think there is a good movie in there somewhere.. with some editing and re-structuring, I bet I can make that movie come to life!"
That is the essense of what editing is all about. It would be more fun to see someone turn Blade Runner into a straight action movie, or somehow re-edit to truly make Roy the hero and Deckard the bad guy. Not that I think this would make it a better movie, but at least it would be editing to change the feel and point of a film as opposed to just making it longer.