It's weird really, because there is not much to discuss in terms of plot. The development of the characters (all of them) is some of the best I've seen on television. We know where Mike and Jimmy are headed, although we're not sure exactly how they get there and every single scene leading to it captivating. Breaking Bad was really a focus on Walt, and to a lesser extent on Jesse and Skylar. This show feels broader in that there are a lot of characters in focus, despite Jimmy being the main one, and each one is scheming to do something.
The relationship between Jimmy and Chuck is probably my favourite part of the show. The opening scene of the finale, where they were by his mother's bedside goes some way to explaining why Chuck seems to have a dislike for Jimmy. Perhaps he was his mother's favourite, despite being a screwup - possibly because he was the youngest. The existence of the tape could push him to the brink and have Chuck committed if he wants to prove the man is insane. I just feel like there is enough love there for him not to do that, but Chuck manipulating him into being secretly recorded might push him over the edge.
I cannot wait for next season.