The show is still entertaining but it has gotten quite repetitive. The formula is the same -- Jane figures out the killer early on, doesn't tell anyone, tricks the killer into giving him or herself up but doesn't let anyone on his team in on it. The rest of the team gets short-changed a lot.
The one episode where they couldn't get a perp to confess because Jane wasn't around and then Jane shows up at the last minute and immediately tricks him was insulting.
They've also taken the whole cult of Red John to an almost supernatural level with everything they're able to achieve.