I'm not accusing anyone of being red john. I'm just going to eliminate suspects that simply can't be him.
First the list most likely totally bogus, but still let's study the suspects anyway:
Haffner, Bertram and McAllister have all been outsmarted by Patrick, so I doubt any of them can be RJ.
Plus Bertram and O'laughlin each had been given a different room number in Strawberries and Cream. Wouldn't RJ have suspected something and not sent his killer? Same goes for Osvaldo Ardiles, Brenda Shettrick, Hightower and LaRoche.
Kirkland. Think about it, when Lorelei told Patrick that he and RJ shook hands he hadn't even met Kirkland. Also when Kirkland killed Jason Lennon, Lennon didn't recognize him. He would have if he was RJ and even if he didn't recognize him I just don't see a reason to kill him.
Partridge is dead.
Smith would've been 12 in 1988 so I don't see how he could've killed and tortured two people and Stiles was 45 and too old to have been the 'kid' seen painting the face.
Also I doubt anyone from the list is related to one another especially not the two Brets. And if someone simply has red hair it does not incriminate him.
Red John is not Jane and its not a group of people that would be impossible I'm not even going to go into this.
It can't be Cho, Rigsby, Van Pelt, or Lisbon because in Crimson Hat they were all together during Patrick's conversation with RJ and surrounded by the FBI it would've been impossible for them to communicate with Patrick without anyone noticing. Same goes for Darcy.
I'm starting to feel that Cbi Ron is a red herring. Too much attention is being drawn to him.
I think the way the show works is the murderer is most often the person no one would suspect because they were never treated as a suspect. They were always just there. And the show has been shoving him in our faces lately. There's no concrete proof as why it can't be him. It would certainly be interesting.