This is top 3 in my best shows ever.
I loved the way they developed Nacho throughout the series. It was the reverse of Saul or Walt in BB. What happened to him was inevitable, but also loved the way he went out. Everyone keeps saying Mike is Breaking Bad, but I disagree. He's already exactly where he's always been. He was never exactly good. He's always been a really good complex character... kind of an anti-hero. For all the good he tries to do (save Saul in the desert, help his family, try desperately to convince Gus to let Nacho go, etc.) he does an equal amount of bad... but he's conflicted. Mike is what he is and even was what he was back when his son was alive and he was a cop.
Kim is interesting in terms of her character development. I don't know how I feel about it. I'll say this, I don't think she dies. I also don't think she exactly dumps him. What happens to her (I believe) connects to the way they've begun every single season so far.
Finally, I can't decide if I like the artistic beginnings or if they feel forced. One thing I liked was the symbol of the ice cream parallel to Jimmy finally really becoming part of the cartel pretty much officially. Jimmy innocently about to eat ice cream. Cartel takes him to the dessert. Ice cream eaten by ants by the time he gets back