I just found the ending with Saul giving himself up really hamfisted and completely out of character for him. It just felt like moralizing for the sake of it.

I think they wanted to do the whole ‘threes’ thing, Walt dies, Jesse escapes, Saul gets arrested.

I do agree Sauls denegration near the end felt out of character to a degree, the guy was a con artist/lawyer his whole life and I dont see him getting that deranged in his old age.