I think the Masood's had a goof first year that was quickly ruined by excesses on Santer and DTC's part, they could have been stronger, but the show never tried. They've also suffered without Zainab, and have proceeded to trash the character because Nina Wadia won't return.
The Foxes have always been an afterthought to this show, Denise is the only one that's appealing, and I don't think she's a character that really needs family around her (but then, they don't invest in her by herself unfortunately). Libby and Chelsea were played by poor actors and never had any development, and Kim is pretty much a parody at this point.