In Some areas you are right. The smash cannot be wasted. But, the one purpose for smash was to aoe damage and grab aggro and try to hold it. I have bee playing a jug since I first started the game. I have found some of the things useful and not useful.
People have complained heavily about the jug and it's aoe abilities. What a lot of pvp players don't understand is that it affects the PVE world also. So the tanks lose the ability to do their job effectively.
Now, Sweeping slash needs a target also. So we have lost that ability to spam it to grab aggro.