I disagree about the opening song. I love it...captures the mood that True Detective goes for, which I call "dirty sexy". Seven is a great example of this tone. The opening sequence with the music and visuals reminded me of Seven. Anyone that's played the Hitman games and has heard Jesper Kyd's music...it's the same deal.
I dislike Justin Lin's direction for this series though. Everything is too clean and too Hollywood. I loved Cary Fukunaga's work on S1 and his use of tilt-shift, center composition. It was gorgeous and totally fitting for the series.