I voted 3e, because of the stated attempt to unify everyone and allow every type of game. The active 3e period, particularly shortly after its release, is probably the most unified the gaming community has been (at least, since the infancy of the game when there was only one rpg), and there's a reason why. The 3.X mentality was fairly modular, and allowed for a wide variety of styles. Hopefully we will indeed see the return of the "toolbox", albeit one with slightly more refined tools.