I think it is great that Nino and Yoko are starring in a drama not targeted at the usual JE fans demographics. I watched the first episode of Haikei without subs, most of the storyline is lost on me, but I do think both Nino and Yoko are doing a great job with their roles. I am not sure whether I'll like the show or not at this point, but will definitely continue watching.
Lady ZG has pretty much covered all the groups that are currently active, with the exception of Shonentai and of course Matchy --- then again, nobody under the age of 30 is really into them anyway