I read a fic in D-Gray Man fandom that I'll never forget. Actually the pairing that it listed was one of those juggernaut "hawt" yaoi pairings that fangirls shit their pants over. That said I was half expecting (okay...completely expecting) to find the usual half-arsed attempts at proper grammar, no appreciation for the cannon context, gross woobification of male characters yada yada yada.

It's been five years since I've read that fic and I'm still wiping off the leftover pieces of egg off my face because holly shit was I wrong...

Back when I read Inheritance Cycle fanfic (yes, you all can laugh at me now), someone wrote their version of book four. It turned out to be rather good, and in my opinion was better than canon.

I just wish I could remember what happened in it. Anyways, the author wrote too much for one book and split it into two. Unfortunately, they gave up half way through the sequel. Here's a link.

https://www.fanfiction.net/s/4585314/1/

It may not be as good as I remember, but hopefully won't be too much worse.

I don't know about actually written Twilight reduces, but someone I know was planning a completely ridiculous one. I don't know if she's still planning on doing it, so I'll ask her.

If you want Twilight to be smarter, and heaven knows how you'd make it dumber, then Luminosity, by Alicorn may just be for you. I certainly enjoyed it, and my views on Twilight are more commonly possessed by the characters of Fahrenheit 451.

Hope that was helpful! =]

--parp