That's the problem. Coruscant Nights is a trilogy that is nothing more than a sequel to the little C list characters in Darth Maul and Med Star. And it has nothing to do with anything but what happens to them. And the story just isn't that interesting, or fast-moving, or relevant to a larger continuity. I don't know why it got three books. It was so padded.
Very few of the books not starring the primary characters are good for me, but I think it's more the fault of the writers than the lack of the movie characters. I thought the Darth Bane books were good. I liked "Death Troopers" and that starred nobody.