It also brought us variant rules so popular they are treated like defaults (free archetype), subsystems that significantly increase the kinds of games GMs can make (chase rules, influence encounters), and rules to homebrew hazards and monsters. Skipping it was an incredibly bad idea and making...
Either variety of unarchetyped vigilante too, since you can get whip mastery and improved whip mastery for a single vigilante talent ("Whip of Vengeance") and lethal grace will let you TWF with whips pretty effectively (though the extra BAB for the avenger is pretty handy here.) Baba Ganous...