The writing is clearly written on the wall. The Red John chapter is not going to be re-introduced to the show. The show has taken a much different direction, as we all can see, and quite to the contrary to what others believe, Marcus Pike is nothing more or less than Marcus Pike, FBI Agent. He is not Red John.
Bruno Heller could not bring back Red John even if he wanted. The most he could do at this time is have the show answer some of the big questions remaining, but he cannot and will not choose this route.
It would bring the show back into Red John and it would create even more questions. The show did some bad writing for season 6, and that is how we are in this mess.
Yes, RJ should have been saved for the finale but it was not. I hate to say this but Red John was Macallister. Whether you accept it or not.
Sure, you can find websites claiming RJ may come back or this or that "may" happen. But when it comes down to it, nobody knows anything more than the next guy.
Bruno Heller is not saving anything for the end. He is not going to have a huge climaxing finish. The show will have it's share of crime fillers, but other than that you're going to see the cast move on. You're going to see Jane move on.
There is no more Red John. And soon enough, there will be no more Mentalist.
I'm not trying to be the pin that is popping your balloon, I am trying to tell you to open your eyes, and realize Red John is old news. You should enjoy the Mentalist on Sunday nights until it ends, and in the mean time enjoy your friends, family and go to work. Not pounding the keyboard arguing about Red John.
Signing off to enjoy this nice spring day.