The Bishop family show is absolutely the most boring thing they do (even loving Walter as I do), but I'd argue that Olivia's still the main focus and gets most of of what character development there is. And there's nothing horrible or characer destroying about it at least, it's the secondary characters like Nina, Astrid, and Broyles that really lose screentime for it, especially later. The 2nd season's much more scattered overall and plotty, but at least they aren't outright replacing Olivia's storyline with the Bishops yet? *hopes*