Blogging the show has been alot of fun. It's easy to predict who goes next, but it is like Fate without the plot-armor or the overly complex mythos (or like Fate/Zero with the Chinese zodiac and a cast of Kirei's, Kiritsugu's, and Casters). Just assassins hunting each other however they wish. And for as much as they spell out who the next person to go, there's still overwhelming tension and unpredictability in how they will go.
They also leave enough aspects a secret such as their powers and abilities to make it a surprise when characters find out firsthand what they are. It's not the most thought-provoking, but it's fun to follow the developments as they happen.