I asked Austin Peckenpaugh (Senior Designer) about Rage and Focus builds and how they're fitting into PvP overall right now, and here was his comment:
Rage and Focus have always been high burst specs, but they haven't been very popular due to some usability and quality of life issues in the past. Our goal for Focus and Rage was to address those issues without significantly affecting their burst. In large part, I think we've done that, but the result is that many people are playing them now, which means there's a lot of AOE burst happening in warzones that wasn't happening before. We're willing to wait and see if their popularity is a result of being viewed as "flavor of the month" (i.e. Rage/Focus populations will naturally subside as people realize the spec doesn't suit their playstyle) or if they are truly too good and were just too unusable before. In short, we're going to keep a close eye on it.
Thanks for the reply, Allison.
One of the biggest problems with Smash/Sweep now is the fact you can't stop it. It used be if you saw it coming you could knock them back and stop it. Now I notice that when a Jugg/Guardian leaps to me even if I knock them back before it goes off I'll see them land the animation goes off 20m away and I still eat a 5k hit. It also takes little to no setup. Leap, Smash/Sweep isn't exactly a complex rotation. Force Stasis/Choke, get knocked back, Leap, Smash/Sweep isn't exactly rocket science either. It's an incredibly hard hitting AoE instant it should take some significant setup to deal the kind of damage that it does.