Jiade wrote:
Haste does not lower the internal WF cooldown. This is why enhancement shamans (well good ones) don't stack haste on live. In WotLK, I think the standard imbues will be WF/FT with Lava Lash usage. Haste actually benefits FT whereas it has no effect on WF. I'm no number expert so I don't really know the exacts, but I guess there is potential for haste to be useful come WotLK though I have a strong feeling it still won't be a very good stat.
According to Elitist Jerks (or what I read from it), Haste is fine for Shamans. In fact, any damage lost by Windfury is more than made up for my the extra white damage. While haste isn't AS good for the previous reason, it isn't a negative stat. My guess is that it's about on par as far as priority goes as +hit.
Quote:
Haste Rating
Haste Rating will directly increase the contribution of white swings to your DPS - 1% Haste will generate 1% more auto attack DPS. Prior to patch 2.2 Haste Rating became the superior stat, but the 2.3 patch reduced its EP value closer to that of Hit Rating.
Modeling at one time indicated weapons hasted between 1.51 and 1.41 speed will actually experience a sharp decrease in potential Windfury DPS. The range of 1.51- 1.41 speed was believed to cause the main hand to always finish a swing just before the end of a WF cooldown, making you wait longer for the next eligible swing that can proc WF. If hasted in this period for a long duration, you could expect WF DPS contribution to decrease. However, you'll also experience many more white swings during that time, and so the loss of potential WF procs should be offset by the increased white DPS. It is no longer believed that the 1.5 to 1.4 hasted speed will actually cause any decrease in DPS - you should notice an overall increase.
There is no need to worry about the 1.51 - 1.41 hasted weapon range. The original claims about the supposed DPS loss had done no empirical or simulated testing to back up their modeling. More recent testing has indicated that whatever potential WF DPS is lost because of swing timer issues is more than made up for by the gigantic leap in autoattack DPS.
Bolding is part of the original article; italics is my own. See here: http://elitistjerks.com/f47/t20765-shaman_enhancement/#Haste_Rating
In conclusion, according to EJ, Haste rating is fine to have, so don't worry about it.