Conundrum

What are people's thoughts on making a fanfic into an original work of fiction and attempting to do something professional with it?

For instance, if you took a Wolverine/Rogue fic you wrote, took away their super powers, gave them different names and different histories, but otherwise kept what words you could of the fic you had written intact?

What if that fic was already posted? Would that mean taking the fic down, or locking it, would removing people's access to the fanfic be reprehensible, would it be in violation of some kind of copyright if the professional thing you were trying to do with it demanded that the work be previously unpublished? What if your fic is on someone else's archive? Do you ask that to be taken down too?

I feel like some people will answer that one should just try to write something new instead of recycling a fanfic for a professional purpose, but I have one or two things that I have posted that . . . were more just using characters in order to say something for me, rather than using something for me to say something about the characters, if that makes sense.

All thoughts and opinions welcome.

(no subject)

I changed my username. I am still joy. Dude, joy was the best username ever.

I . . . am not lettered, very. But it was one word! It was available! It's easy to say and has to do with words! Sue me.

I also changed my name on fanfiction.net and livejournal. It will be changed on Archive of Our Own. I also changed my fannish email; all mail from thekorapersonality@hotmail.com will go to letteredlettered@gmail.com, but you can change it in your accounts if you have me as a contact. I also changed my personal email; if you have it you can change it, but everything from the old one will be forwarded to it.