This product is a bad idea. It contains a wide array of feats that are, as the title suggests, horrifically overpowered. The only way these feats can be considered “balanced” is that they can make any character horrifically overpowered, so allowing them all into a campaign gives all the players (and monsters, and NPCs, and even minions) a chance to be ridiculously super-powered. And as long as everyone is super, it’s all balanced out, right?
No, we know. Just... run with it, okay?