Anyone who thinks Redjohn is one of the 5 people left on the list is assuming Patrick Jane, Redjohn and Bruno Heller are all pretty stupid OR they forgot about Rosalynd Harker.
Once the list is revealed, don't you think Redjohn and Patrick are immediately thinking about Rosalynd Harker? She knows who he is. You can't make a conspiracy around this. If Redjohn is on the list, he has to kill the identity by which he normally lives. Why do last season's finale and this premiere opening continue back to back? Everything happens within 1 day, to eradicate Jane taking the suspects to Harker. It ends with Brett Partridge killing himself with help from Haffner.
A serial killer mastermind on the run is what Jane is tasked with finding since episode 1. It HAS to be Brett Partridge. How do you find a guy on the run? You lure him to you. How you ask? With leverage.
