I have been working all night editing some of my old stories that have little smut scenes to take them out (the original contents will eventually be posted here on AFF). But I got some other stories that I call "collection" stories. They are a mix of K rating to M rating, some few in-betwene in these collection stories of a specific genre/category (Naruto, Harry Potter, Vocaloid) will be in a real rating of MA. Two of my fics "MASTER's Folder", "The Storybook of Hogwarts", they have some semblances of MA in the mix of M, T, K+, and K rated oneshots.
I still say in my opinion FFN should reapply the MA rating filter and add further filters. The worse they could do is spit in our collective faces and shut down the website indefinately.