I notice everyone moans about Nick's character at the end of his run, but I still liked him even in Seasons 10 and 11. He'd suffered so much loss, and was seeing his old Watch run in ways he didn't agree with. I feel really bad for him when he looks at the picture of the old Blue Watch - he's seeing his late friend John Hallam, and Colin who was invalided out, and Bayleaf, Kevin, Billy and Sally who moved on.