Are you serious with The Mentalist? I thought I was the only one! I'm totally with you on the pre-Red John reveal. Not that I hate the post-Red John reveal, it's just that the whole thing felt pointless anymore.
I'm on and off with Castle and Grimm, planning to watch it but my to-watch list is piling up.
Love The Tomorrow People and Gotham, both Gotham and The Mentalist are developed by Bruno Heller. :) Not sure if you're into Gotham, but reckon you to give it a try.