I tried searching the forums, nothing turned up. I tried googling, nothing valuable turned up. There's a thread on Reddit with lots of guesswork.
So I had Focus laying around in my stash for a few weeks and found Restraint a couple of days ago. Yes, I hate myself for my luck, too. The set bonus sounds very interesting and could easily outdamage SoJ+RoRG I guess. The question is, how does it work exactly?
Your primary resource spenders that spent resource deal50%more damage while you are at full resource.
What I found out so far:
the set bonus is not bugged, as early reports have suggested
you can't have additional resources through items or Paragon points, it must be 100 (fury, arcane power, whatever) – this seems like a bug to me
it works on resource spenders, as suggested by the tooltip
your resources must be full when casting the resource spender
if your resources are again full after casting the resource spender you can cast it again and get the full bonus; if your regeneration is high enough you can spam with the 50 % bonus
it doesn't work if your resource spender doesn't spend any at all – through item effects for example (there's an item for the Crusader that makes one of their shield skills free to cast, doesn't work on that)
Does anyone know anything else about the set? Maybe any tipps for Barb? I found speculations about Boulder Toss being a nice build for this set.
Thanks to work and kids I don't have much free time to fiddle around and do damage tests so I'd be thankful for some "Do-this-and-you'll-have-fun" kind of hints by players that use this set.