You can't spam lacerate to pulverize when you have to spam aoe to get threat, they share the GCD. You can't even cast your aoe twice and miss the 10 sec duration and then pulverize falls off and now you're taking 20% more dmg on a character that has already has its DR nerfed.
Yes, you can hit thrash once, and then lacerate-lacerate-lacerate-pulverize, but then the mage has pulled threat, and the poor little bugger panics and he's running away, taking your mobs with him.
You can do it, but it sucks.
And adding dmg to UV would make it like DND or Consecrate. It makes a little sense, and would ease aoe threat to the point where you could lacerate all day.
But I feel as though we're kind of just arguing back and forth here. Can we all agree that our DR is too low, and with Vengeance gone we need more aoe threat?