More improvements to other skills in the same tree. Frenzy and Onslaught do not increase movement speed normally, just when this skill is enabled. This seems like a lovely convenience, but perhaps not worth the points, with fast run boots and other speedier movement options. (PvP players will probably find it more useful than PvM players, as is the case in D2.)The increased moving speed will make it easier though to keep your fury bar up, since you take less time to get from one pack of monsters to the next one.