Here's some thoughts:

I do think that it's possible that Jane is in a coma in the mental hospital, but you have to consider how long that dream is. Dreaming all of those seasons would mean he is in a ridiculously long coma than usual. Just like to point that out.

Also, Why did Reede Smith say he wanted to go to a prison far away? was it so he could be away from Jane and the CBI or just so RJ couldn't find him?

I'd also like to know about the three dots on the left shoulder. I think it's a sign of the disciples not of just RJ. But it is possible that RJ is a number of different people.

I also think that Brett Stiles supplies RJ with disciples.

REMEMBER: There are only 2 suspects living now: Smith and Bertram. And Heller said that he isn't going to be playing games with us about the suspects. Whoever is SAID to be dead is dead. Although I thought I saw Stiles alive after the explosion when Lisbon was looking around the scene.... could be wring though