I've only got into Malifaux recently but since starting I have noticed that Wyrd release stuff in waves. Book 1 this and Book 2 that. Sadly I fear this may end up killing the game like it did one of my other favourites Monsterpocalypse. The problem with wave release is that you inevitably suffer from power creep, where the newer models are just bigger stronger and more effective than the previous lot. The amount that people talk about the differences between book 1 and book 2 masters does make me worry that the game is already suffering from this.
Wave one has terrifying models, well to counter that worry loads of wave 2 characters have anti-terrifying counter measures. Creating new masters and minions that play differently rather than play better is what is needed. Though at the end of the day there are only so many ways to skin a cat... i think it's like 8.