silverwheel said:

But this "final cut" has not been provided - who will provide it, if not the fanedits? (please note that I have yet to encounter a fanedit that actually does a good job of this, but I know it is possible).

You know, in a way, that actually supports my point; I don't know this for a fact but from what you say, I assume there were fanedits that tried to make this "final cut" but failed, right? And what if someone's first experience with Superman II is one of these? That's my point, a fan editor may very well make a film better but he may just as well make it worse and I have no problem with that, as long as the people watching it are aware that they're watching a vision of some guy from the internets and are already familiar with the original material assembled by the people who created it or, yes, paid for it - then if the faneditor made the film worse, it doesn't form the viewer's opinion on it.