I could be wrong about this but it seems like the interest in characters is what polarizes people on this show. If when you watched Breaking Bad you thought Mike was this great character that you would love to know more about his backstory and it could be it's own show, then you probably like this show.
If you thought Mike was a good character, but nothing you really want to see more of, just a good supporting character in a great show. Well then maybe this isn't for you.
I remember season 1 the Mike episodes were the most polarizing ones. People would be like "That was awesome, a Mike episode!" but I guess his story arc just doesn't do as much for me.