I couldn't agree more! For example, Backhand, which happens to be an attack, is an example of an ability that belongs more in the Vengeance or Rage trees.
Plus, true, Juggernauts don't have a lot of good AoE DPSing. "Smash", I think, is a good ability but could use more potential. I mean I would enjoy Smashing more and more if hadn't been for its weak power. Plus when I get on my skill trees and level up, I end up having to spend a lot on the buffs that buff Smash, instead of other attacks like Impale or Obliterate.