GABE MANCINI;
Any new Red John theories have to address the Suspect List and Lorelei's curious computer epistle.
Most of the Red John theories are confused because they spend too much time ruminating over clues which lead to Red John red herrings.
Bruno Heller has emphasised that the list is credible and that each Red John suspect on the list is a legitimate suspect. Bruno Heller has not confirmed that Red John is actually on the list.
If Red John is not on the list, why does he fear the list?
It can only be that Red John is a close associate of someone on the list whose investigation will lead towards his unveiling.
Lets look at the suspects on the list. Each suspect except one is a credible Red John suspect. Each character on Jane's list has been either a Red John red herring or his behavior has been suspicious like Sherriff MaCallister's attempt to intercept Van Pelt, except one Reede Smith.
Reede Smith is the odd one out on Jane's list therefore his presence is crucial.
Reede Smith is definitely not Red John
Therefore Red John must be a close associate of his; Gabe Mancini.
If Gabe Mancini is Red John, it would explain a curious detail in Lorelei's statement " I will kill often until you catch me or I catch you ". I believe that this could be a reference to Mancini's pursuit of Jane through the Statehouse(Red Beads).