I want to share my thoughts with you (Some theories have inspired and helped my comments):

1) If RJ is on The List :

A)If RJ is one of the last 5 suspects:

I
think RJ wants to draw Jane's attention to "Tyger Tyger Organization".
As we know, Rj is not a stupid or naive killer. He is narcist so there
is no reason for him to be involved in any group. He just recruits
accomplices and directs them according to his agenda. He set up a plan.
He hired the PI and deliberatley showed his fake tattoo ,which is the
same as the"Tyger Tyger Organization", to her. That's why he said "Tyger
Tyger" at the end of S03 finale. He has something with "Tyger Tyger".
He may be in it in his early years but then quitted for onknown reasons.
He wants both to draw the attention on "Tyger Tyger" and to get off the
radar. In Jane's house, Bertram, Smith and McAllister have 3 dots
tattoo. I think these they are:

a) Moles of Bob Kirkland or something else. They infiltrated to "Tyger Tyger Organization" to bring them down.

b) They're high degree members of "Tyger Tyger" and not moles.

c) They're high degree members of "Tyger Tyger", not moles and trying to catch Red John for unknown purposes.

Jane
separated them from Bret Stiles and Ray Haffner. I don't believe Stiles
is Rj so that leaves "Ray Haffner." He must be RJ. By the way, it
seemed to me that especially Sheriff wanted to explain Jane their
position and agenda. Probably before the explosion, they told that they
were from "Tyger Tyger Organizaton"( as a moIe or not, we don't know
yet). That also explains why Jane tells Rigsby that he shouldn't trust
anyone in law enforcement. PJ learned about "Tyger Tyger" now.

Besides,
the car that was about to crash with Lisbon's was very suspicious
(While Lisbon was hurrying to Jane's residence). Maybe, Jane and some of
the suspects were in it. Maybe RJ or his accomplice was in it. That was
an important scene IMO.Also, in the next episode trailer, I think I saw
the agent named Oscar Cordero who gave Rigsby the file of Kirkland's
death. As far as I saw, he was pulling his gun.
Rigsby and Van Pelt's departure could be result of his bullets. Maybe
one of them dies and the other one can't resist being in CBI any more so
he/she leaves as well.



B)If RJ is one of the suspects that are presumed "Dead":

a)
Brett Partridge: I don't think Jane is so stupid not to be sure that
Partridge is dead. This point is so important. If RJ is Partridge, PJ is
a real moron and Bruno Heller messes up everything he has built so far.

b)
Bob Kirkland: It's so interesting that we still haven't seen Patrick's
being informed about Kirkland's death!!! I don't think it's off the
camera becuse if it were that, Patrick Jane would investigate that
himself and that would be shown to the audience. There's something going
on there! By the way, I think that there's an important possibility
that Michael Kirkland is RJ. Why? Bruno Heller told that we can trust
that list. Yes , if Michael Kirkland is RJ, he is on the list as "image"
but not "as identity". Bruno may have told the truth "partially" in
this respect.

By the way, there is a certain pattern in suspect list:

-First, the writers kill the most suspected RJ candidate Brett Partridge.

-Then they kill Bob Kirkland, who had a same agenda with PJ.

Now, We have 5 suspects. Think about that.

- 3 of them are from "Tyger Tyger Organization".

- 2 of them are from "Visualize".

That's
not a coincidence. Maybe "Tyger Tyger Organization" and "Visualize" are
rivals/ enemies for unknown reasons.We know that RJ has a connection
with Visualize (Even it could be personal (Bret Stiles). That also
explains why RJ is so eager to draw Jane's attention to "Tyger Tyger
Organization"..The most logical person to be RJ is Ray Haffner in this
respect.

2) If RJ is not on The List:

Also, I think that
the show must surprise the audience while revealing RJ's identity. Now, I
don't think most of us would surprise if RJ is on the list. Maybe we
would surprise if RJ were Smith or Stiles but not as much as it should
be. Throughout six seasons, we've been watching the show and waiting a
big surprise for RJ's identity. OK, Bruno Heller could have preferred
this kind of pacing and narrative to reveal RJ ( Give audience a list,
eliminate the people one by one, find RJ step by step) but this would
lower the degree of surprise that the audience would want. As a
conclusion, one part of me wants to believe that RJ is not on the list.
This would really surprise everyone. Jane has never revealed his list of
suspects (except Gale Bertram) he just confirmed RJ's list. That could
be the key point if RJ is not on the list.