Jimmy/Saul can still be the centerpiece of the show. The nucleus in which all other characters and storylines revolve around. In Seinfeld, didn't George and Kramer steal every scene that they were in with Jerry?i think it's a wee bit of a problem that mike steals every single episode that he's in...you know, since it's called Better Call SAUL. but the format still works
To be honest, I don't know how long I would have lasted with BCS if they continued down the law firm/attorney/space blanket angles without moving the story forward to Mike, Salamanca, Tuco, etc...
I'm enjoying the show for sure, but right now I feel like we are paying our dues until the story really gets going. (of course this is laying the groundwork for the rest of the show so I'm OK with this)