Ok, so I'm the first to admit this could be completely wrong...

But is it possible that these 7 suspects are more misdirection?

After seeing the excellent finale, Sean Barlow seems to be a suspect for many reasons.

1. Sean is the uncle of the girl who Red John murdered to destroy Patrick's childhood memory.

Is it possible that Sean was actually there at this moment, and saw Patrick's reaction to the moment? With his ability to read people he may have seen that it was a meaningful moment for Patrick.

The only other person in Patrick's memory was the girls Dad, and he would be fairly unlikely, but it's quite possible Sean was off to the side watching.

2. I believe the video Patrick watched at the end of the finale was made before Kirkland broke into Patrick's and stole the information on the wall.

So how does Red John know the 7 suspects Patrick would land on before he actually had?

An idea I had is that all 7 are accomplices of Red John and may actually assist each time he murders someone. This puts them all at each murder scene, which is how Patrick came up with these suspects.

Sean could be using this as a misdirection tool and also, as Patrick first met him years before, could be arrogant in thinking Patrick would never think of him.

But acknowledging Patrick's abilities would have realized that he would come up with the his 7 closest associates. 

3. Sean knew Lisbon was in love with Patrick and used this knowledge to show off his so called psychic abilities.  This could just be his abilities at reading people, but it's possible that it's because he has been following Patrick and Lisbon closely.

Lorelei accused Patrick of being in love with Lisbon earlier on in the season, so if she knew there were feelings brewing under the surface, so would have Red John.

4. The other people in the series who have taunted Red John have ended up dead. Why hasn't Patrick?

My guess would be it's a rivalry of some kind. Sean Barlow and Patrick Jane come from the same background, both showmen with amazing mentalist talents.

Red John wants to prove he's better and smarter so instead of killing Patrick, he kills his family. Then he continually taunts him to show he's smarter. He enjoys playing with Patrick and making him suffer.

It just seems a lot more personal in the way he's tortured Patrick for years instead of just killing him. This is why it could be family related.

This fits nicely with Sean Barlow because of the past family tensions mentioned. The "business deal gone bad".

Also, Lorelei talked about how how Red John reads people immediately and is that he and Patrick are very alike.

Sean fits this description more than anybody (Apart from Bret Stiles).

It's possible the other suspects could be putting on a front, but in terms of what we know about RJ, Sean is master manipulator just like Patrick.

On a side note, the reason I don't believe it's Bret Stiles, as Lorelie talked about how it was strange they weren't lifelong friends from when they first shook hands.

Patrick and Stiles have always been fairly pleasant with each other and even helped each other out, so they could almost be loosely classified as friends (unless I've missed episodes where this is not the case).

Now, they could both be playing each other, but in all honesty they don't seem like mortal enemies.

5. After the meeting with Sean Barlow, Patrick was quite dismissive of the conversation, saying he couldn't read him. I found this odd especially since Sean was practically mocking him about being a step behind Red John.

He could have been doing this to once again throw Lisbon off and keep his cards close to the chest.

Sean also said that Red John had powers, and as Patrick mentioned, Sean's family like to pass themselves off as real psychics.

Just the fact that Sean really seemed to take a strange amount of interest in Red John for someone who was only very distantly tied to him.

6. Finally, apparently Sean Barlow will be a recurring character in the next season, which means there's a slight chance of this theory being correct!

Just some crazy ideas, but who knows right?

I was wondering , he said at the begginning of the episode, that he concluded names of people he shook hands with AFTER his wife was murdered, what about people he knew BEFORE and it actually might be someone from his childhood, or im just stupid P:

I think it's Sean Barlow. He knows Jane, is "psychic" etc etc.

Sean is the Irish name for John. Furthermore, before he lost his hair, I'd say it was red, because of his Irish gene pool.

What was Jane burning in the episode?

The list is in Jane's head, he wouldn't have a physical copy of it. Which leads me to believe the list he does have is fake to flush out Red John.

Here is my theory. After watching the finale, Heller gave us some dead clues. 

-- Red John is someone in Jane's past. Someone he grew up with during the circus days. This was revealed through some past video during the season finale. 

-- Red John killed a person in Jane's past. Not from the recent past, but a childhood friend. Jane mentions to Lisbon that Jane has not seen her in over 30 years. The last time Jane saw her was when he was 12 years old. 

-- Red John knows Jane's secret in which Jane has never told a soul about until the finale episode. 

So with those clues, I think we have an entire new list of suspects that are not in the 7 that CBS mentioned. If we are looking at Jane's childhood than we are looking at only a few faces.

Bret Stiles is old enough. But he doesn't have the look of a killer. 

JJ LaRouche is a perfect age, but is too large. In the episode where Red John shows his shadow we see him as a average built man. 

Bertram doesn't fit it because he's too naive and honestly doesn't have the motive to being a serial killer. Bertram is working with Red John that's not a question, but him being Red John isn't. 

That leaves very few people left, I personally think it's someone that Jane knew when he was a young kid. The only person I honestly can think of it now is SEAN BARLOW who was in the finale tonight. He had that swagger about him, as well as had the build and the height. He was also incredibly clever and even got Lisbon's head. 

I do not think the writes from start had a clew who Red John was going to be, so they were making the story as they were going when they found that red John was popular. I might be wrong in this theory but I have some experience with show writers. So looking at clews in much earlier episodes seams pointless to me. Nevertheless I do think there is a possibility this character to be someone who knows Patrick well, someone he will never suspect or we will never suspect. So I exclude all the characters that it is too obvious to be since this will be a let down form the writers and show producers. We should look elsewhere.
Having said all that I must say that the last episode gave me a clue that it is almost too good to be true. Red John is Patrick's father. Now I do not know why I got this feeling since I'm not sure what has happen to his father besides the info the episode gives away but in the great Hollywood tradition it is always a father and son universe. Think Darth Vader-Luke skywalker duo, so why not here too. Now why a father will have the sons wife and daughters killed I have no idea and I can't explain, though I think they can find a reason to cover it if they wish to be creative.

I think that jane worked out two theories of who is red john. The first one is to show red john his work of finding him and the second one is in his head.

The first one, the episode when homeland security broke into jane' place he was very happy. Then he showed the cd to teresa he had those pictures, he had hem in order and where came those pictures. He is messing with red john's head and no one seems to notice.

The second one is in his mind. For all we know he might already know who is red john. Notice when he showed the cd he was facing away, and kind of smiling.