I am not buying Bertram as RJ. That can't be.
I picture red john to be someone with evil laughter or a creepy smirk. For that quality, we have the Sheriff, Volker, Harken, Stiles, and Partridge (I haven't seen him smirked but if he does, I'm sure it would be creepy).
My money was on Partridge but he died. I hope the show will give a good story if he turns out to be alive. Else, please keep him dead.
Of all the remaining suspects, the sheriff is the only one with the characteristics and composure of a batman villain. Red John has to be Jokerish. Intelligent, broken, dark, clever, and deceptive.
