Imagine you take a very bad story's premise, and you start thinking how you would have writen that story to make it good. Or maybe you take an unexplored part of a story and start making up how it would have gone.
And you keep writing and writing, adding stuff where it's needed, and maybe even changing parts that were originally there to make them more of your own taste.
Do you think that's a valuable way of creating a legitimate original story? Or would you consider it just smart plagiarism? Or maybe you think the line is clear...?
I wonder what you guys think!