I'd like to disagree with the guy that stated: "You are disappointed about the RJ reveal but you weren't disappointed from the impossible tricks that Jane came up to catch the killers"

This show is meant to be 100% real, with no signs of supernatural staff or unrealistic things to happen.I can't recall a single case where Jane's trick was impossible to do or think.Correct me if I'm wrong.

And then, from all the things we've watched over the 5 seasons and we were truly impressed by the intelligence and creativity of Patrick Jane, then we watch episode 6x08.Some might say it was a good episode.(Not me)
This episode was way off the show's standards.

Red John and Patrick Jane, have a lot in common.
They both love classical music and tea.
They both are weak/don't know things about physical fight.(remember that RJ uses his knife, stunt guns and other staff to bring down his victims)
They both have ultimate mental skills.
They both are more clever than the average mind.
They both have hypnotism skills.

And then Red John is portrayed as a common psycho, sexual perverted man, with no special intelligence, that he depended on others to think and act for him, a man that runs  a marathon with a bullet inside him, a man that makes fun with the "Red John" symbolism, (he has a rough voice and he fakes the RJ one, smiley face-those didn't mean a thing eventually.)

I believed in something deep behind RJ's behavior.I supposed that he painted the smiley risking to get caught for a reason.I believed that his voice was his natural, high pitched, calm, spooky voice.
When Rebecca stated that RJ has a plan of "love and enlightenment" I certainly didn't expect this.(A cop secret organization that turned out to be not that secret eventually.)

I expected a 20 minute or so conversation between the two basic characters of the show, flashbacks, a connection between them, answers to our questions.

In any case, you might wanna watch again the end of season 3.
85 epic minutes.Revelations, action etc etc.
And then watch 6x08.
-15 minutes to arrange the meeting between Bertram and Patrick Jane
-15 minutes FBI chasing PJ.
-2 minutes conversation between McAllister and Patrick Jane.(nothing substantial)
-15 minutes of Jane chasing McAllister.

Red John IS vulnerable.But I obviously didn't see that coming.For me, catching Red John must have been an amazing twist that Jane made so he was able to be two steps ahead of RJ and catch him in the end.

And even if I somehow get over the way RJ died, I will never get over the fact that they didn't explain a damn thing.

Hope my thoughts are common with yours, let me know what you think about all those thing I've written in the comment section.