I don't know if this has been proposed, as this is my first time stumpling across this site, but I think that since the 2 latest episodes it has been much clearer who Red John is.
With the whole Tyger Tyger order was revealed I started to think that there is no Red John. Red John is clearly and alias for all of those involed in the order. Red John is the sum of the tyger tyger order. Hence the ability to move unseen, the common tyger tyger tattoo and the shared knowledge of anyone comming close to Red John. The next episode is called The Great Red Dragon. Looking up trivia for this episode is revealing and interest quote:
"And behold a great red dragon, having seven heads and ten horns, and
seven crowns upon his heads. And his tail drew the third part of the
stars of heaven, and did cast them to earth." - Rev. 12:3-4, (KJV)
Seven head, ten horns, and sevens crowns. If the title is an reference to this quote and to Red John, it is a hint there Red John is more than a single human being. He is the sum of the people hiding under his name. Depending on how big the Tyger Tyger order is, they may all be part of the Red John alias, or maybe it is the leaders of the order that is Red John.
Dunno, but this have been bugging my mind since the order was introduced.
