aba1 said:
To get fan work published is to alter the original authors work through association. It doesn't matter if it is good or bad the fact is it directly alters the perception, reception and appreciation of the original work not to mention the message and story behind it all.
There is a difference between saying "hmmm I don't care for this painting" and saying "hmmm I don't care for this painting" and then changing it simply because you don't like it.
I see your problem here. You fail to understand the distinction between changing a physically existing object, and creating new ideas.
Fanfiction changing someone's
perception of a story, doesn't actually change the story. It's still there, the words are set in stone, the same colors are on the same canvas, the strings of data are still on your hard drive, and in your mind.
That there are ALSO some other words set in another stone, other colors on anothr canvas, extra strings of data on another part of your hard drive, and a few more thoughts in your mind, doesn't take it away. If you treat the "perception" that is in your head as a physical object, that shouldn't be altered, then you should stop communicating with people, because that's what communication is all about. Changing each other's perceptions.
Reviews alter the perception. Commentary alters perception. Jokes alter peception. New stories can also alter perceptions of old ones, maybe slightly more effectively when they use the same setting. So what? That's what they are supposed to do!
There is The Problem of Susan [http://www.tumblr.com/tagged/the-problem-of-susan] by Neil Gaiman, a short story that is about Susan Pevensie of The Chronicles of Narnia, (without formally confirming the character's identity in the novella), that is all about changing your perception of Lewis' world, and the implied theology behind it. It's a counterargument, against an argument. Lewis wrote a story showing how salvation works, and Gaiman wrote a story showing the horrifying implications of Lewis's idea.
To say that such stories shouldn't officially exist because the "original artist" has a right to stop these counter-arguemnts, is like saying that every forum thread OP should have mod powers, because if the discussion was "their idea", then they get to censor anyone who is picking up the thread.