On paper I guess I get the idea of Nick and Kim - Kim, who had settled into an everyday life, finding passion again with a swarthy stranger. Sadly I think the backlash to the story (with Kathryn Hays saying she got her most hate mail ever for that plot I believe) helped to just turn her into Betsy's doting mother, getting shouted down by Steve in scenes I can't watch without dying a little inside. The problem is that, from the little I've seen, there is no chemistry and Nick is a pain in the ass.
I do NOT get the idea of Bob and Miranda. Upstanding doctor and beloved town figure marries a woman with a "come wiz me to the cazbah" accent who turns out to be an international drug dealer isn't even a good soap idea - it's more like something from an episode of Soap.