Originally Posted by
Erdluf
Which is exactly wrong. On live, haste means you get NG more often. That means you spend less of your time in the "bad" situation of no-NG. So in addition to gaining DPS by doing everything faster, a larger fraction of your spells are cast at a good time. Because of NG, Haste double-dips on our entire rotation on live.
In WoD you'll cast more spells during the cycle. That is a DPS increase. But the amount of double-dipping is way down. If you spent 10% of your time at a bad point in the cycle with zero haste, you also spend 10% of your time at bad point with 1000% haste.
Its certainly true that with more haste, you can make better use of Empowerement. However, except for Euphoria builds, the gain from that will be small, because the peaks are so flat.