Just finished the final season. After episode 5, I was afraid they were going in a not good direction to close the series, but it turned around I thought the last episode did at least as good a job as Justified for closing things out.
I really liked the music and Walt's closing scenes in the final episode. Also in an earlier episode, they read a letter in Lucian's voice, and it may have been a small thing series-wise, but it really stood out to me in how that character was portrayed overall. The narration of the letter was almost how a cowboy in a Louis L'Amour novel, or the Lonesome Dove novel would talk (or write). Just spot on for that character, as was Peter Weller being cast for it.
Sad to see it go, but am glad they ended it well.