Well, this show is actually starting to redeem itself.
There's a nice variety amongst the sisters, and the divorced sister is a really unexpected character. I don't like her per se(or rather, she's a bitch), but she's definitely interesting. And the imouto is magnificent.
Working gets major points for not setting Katanashi up with Poplar and instead with Inami - and the whole shifting focus away from Poplar is a pretty good thing. It's not like I dislike Poplar, but she's just too much of a moeblob to be tolerable in higher doses.