I'm totally with you on John. The fics aren't so bad as they could be avoided but it's Show itself that I'm really upset with. Starting with 'Jump The Shark', it's almost like, what do you call it, character assasination? Have you seen pics of that con, I think it was the recent Vegas Con, where they had Sam and Dean together with John and Mary? I love those pictures. If only ... *sighs*
Have you read
eloise_bright's fics? She doesn't have a master list but you just click at her supernatural fic tag and it'll bring you to her SPN-where-John-isn't-mean-and-nasty-fics.