I read this fic almost ten years ago now, and the fact that I still remember it was fondness (and sadness, since it never was completed) should be a testament to how good it was.
If you’ve ever wondered “Why do so many people like fanfic? Isn’t it all unprofessional and poorly written?” then please read this fic. It’ll show you how easily fanfic can be as good, if not better, than many published books.