Hi everyone, 

1- We have never seen in any episode Jane shaking hand with Brett Partridge and it is not likely that Jane would shake hand with him considering ,Jane's sense of Brett in previous episodes. Khristina and Jane shaking hands , but Khristina is not on the list and no one asks what happened to her? I

 Point 1: 7 person limitation is meaningless to determine who or what is Red John.It is just misdirection from producers. 

2- As of 6th Season Episode 3 we might easily understand that there is an organization ,maybe a secret society within police/governmental department and every member of this society is a potential Red John ,untill now maybe Brett was the RJ or was imitating RJ 

 Point 2: Every clue regading RJ broadcasted to date was fake ,Brett Patridge was another imitation of RJ. RJ is not someone ,it is an organization

3- On the Season 5 Episode 22(Season Final) , you can see decades of "One Eye-All Seeing Eye-Pyramids" Illuminati symbolisms in the background of the scene where Jane and Lisbon was going to fortunetellers. CBS channels' own logo is one-eye(All seeing eye)

Point 3: Redjohn will be an organization with masonic-satanic purposes ,Visualize was put on the serial for this purpose. It will be connected in following episodes. 

These 7 Person much more and plus "Teresa Lisbon" is a member of RJ organization, Lisbon's task is to direct and manipulate Jane as according to organization's requests.

Basicall RJ is not a person, it is a group of people gathered under a satanic/secret purpose.