I agree with everything you said about Seth. I expected him to come back with a vengeance, or something more happening, darker. instead, he is wimpy. His leg getting amputated cuts short his time on the show. Unless he blames Nolan or the department, and decides to seek vengeance. His fellow police officers turning their backs on him didn't bother me. It showed solidarity and displeasure. He was no longer one of them. When it comes to Lucy and Tim, I have had enough of them. The writers need to do something with those characters. I don't fault the actors. The stories need to be better. Maybe the writers are bored.