i dont know if this particular thing has been mentioned but i was watching s4 e23 last night, the episode in which jane infiltrates the 19 24 secret club. When questioned by jane one of the members replies "Can't tell you that, first rule of fight club and everything". I personally dont believe that jane is red john but this shows that the writers may be fans of the film fight club and certainly have thought of the possibility that rj and jane could be one and the same.
