Well, unfortunately the NON-LISTers like myself will be highly disappointed with the RJ's identity more than others will. This is basically because we are so much used to get twisted conclusions from Jane regarding other crimes and their perpetrators. It was like almost every time we didn't see it coming. However, the show had come to such a crux where almost everyone ever casted is accused of being Red John by different people. Normally you don't have this at that degree in other similar shows/movies. And there are two things which I believe that all will agree:

1- The reveal (and the ID) must have been so well-prepared that the audience wouldn't be highly disappointed
2- Achieving the above was nearly impossible because there were millions of theories regarding every single character on the show, so it's truly hard to come up with a surprise.

So it was a good (from the creator's side) move to create a list and have people slowly adjust their expectations within that frame. This way, even if the crowd gets disappointed, the level wouldn't be as much as in the other scenario. Of course, people like me still hope that the list is fake and we will have a really unexpected/mind-blowing reveal but we're now just a minority. I'm afraid, Brett will turn out to be alive and RJ himself (even though the idea itself is lame enough to make me throw up). Well, nothing is perfect in this life. Why should this show be?