LOL, his costume went from the world's lamest Power Ranger to a goofy hybrid character from the 90s. Duke is just a bad decision magnet at this point.
Also, gotta love how they've built this character up in 2 Batman books for a whole year, along with several appearances in the New 52 Bat-books, and he's still not popular enough for a solo book. Considering some of the other characters DC has recently given solo books to, that's pretty hilarious.