If you're looking for more ways to work with your Hitters, Hackers or Thieves, this is definitely a book you'll want to pick up. Each section is clearly organized with new information, new rules and new ideas.
Each section has a different flavor that gels with the type of character it's discussing. That hint of personality really adds to the way this book reads, making the experience more than slogging through yet another sourcebook. This book was fun to read, with lots of cool information about what it means to be a Hacker, Hitter or Thief, as well as some notable things from the past that have to do with each Role.
There is really nothing negative to say about this book. It's full of great ideas that pump me up to play Leverage more than the corebook did. The additional rules are very much bolt-on and aren't going to change the way the game plays, but definitely will give your group more options to enjoy the game.
If you're a Leverage player, get this book. You will be glad you did.
[5 of 5 Stars!]