My name is Kelamor you can armory me on Deathwing – US – Horde. I currently follow the stat priority Str>hit>exp>Mastery>crit>haste. Now my theory on this is, think about how often you spend standing still wailing on a boss or mob…… Most of the current encounters require you to run ALOT this negates the need for alot of white damage. Hastes main function does exactly that, makes more white damage.
I am currently pulling around 20k on Nefarian….. and in heroics i absolutely decimate competition. AOE still needs some work fortunately with the new change to DS comming with the next patch this sholuld be fixed… however on most 5man bosses i pull between 20-27k ….. on bosses with a damage buff such as final boss in HoO… i pull almost 40k…. The objjective is to make your strikes hit as hard as possible (NOT as fast as possible) cause you are prolly gonna be running to kill an add or to avoid that fire anyway.

Here’s a standard opening rotation

CS – Judgment – Holy Wrath – CS, Now here’s where the gain comes in, every thing is on CD but the remaining CD on CS is only 2 seconds after GCD, so now I have only 2 seconds of dead time in my rotation instead of 3 seconds, further more, the haste has given more melee attacks increasing the odds of getting an instance exorcism giving increased odds of only having .5 sec wasted, a bit much to wrap ones head around so here’s 2 rotations (assuming worse case scenario of no procs) and not using other CD’s that are only sometimes used

With 1100 haste/shaman totem (or however much it takes to hit exactly 3.5 CD)

CS – Judgment – Holy Wrath – CS – (2 seconds dead time) – CS – Inquisition – CS,

Here we already have 2 seconds of time not spent hurting things, if lucky something will proc and take up 1.5 seconds in there, or we could even see 2 procs which would change the whole rotation (on average, you will usually get 1 proc though) and with the decreased CD we got 3 charges of holy power 9.5 seconds

Now here is no haste

CS – Judgment – Holy Wrath – CS – (3 seconds dead time) – CS – inquisition
Now here we have 3 seconds of wasted time and we don’t get 3 holy power until 10.5 seconds in and have 3 seconds wasted time, thus haste provided holy power faster again there’s good odds (but not as good) of salvaging 1.5 seconds with a proc

We can further see the affects of haste on procs with some simple math, melee strikes have a 20% chance or proc exorcism, thus every 3.8 (we will just assume that’s your weapon speed for arguements sake); 11% haste brings you to about 3.4 seconds, so having an extra attack every 9.5 seconds, or once per my haste driven rotation means that you have an additional 20% chance of having less deadtime due to exorcism, so with all your procs your almost guaranteed to only waste .5 seconds, whereas without haste your looking at about 70% chance

A lot of these numbers are estimated somewhat (1AM atm, not doing that much math this late)
but in the end it seems like haste increase your odds of getting exorcism by about 20% (which hits very hard), increases damage from dots(which isn’t much granted), more white damage, more CS, and faster generation of Holy Power it adds up a lot, Ive heard that the ideal cap is at about 1100 haste, haven’t had time to figure out if that’s right or not, but it may well be adding everything in.

These are all done with some rough math as it were, its quite late, will figure out rest later zzz

i had about 1300 haste rating. about 11% mastery and Hurricane on my weapon. Plea note my ilvl is 339, so im not even raiding yet.

I was able to peak at just over 14k on boss dummy.
Read this post as well as elitist jerks, stating the same thing…..so reforged all extra haste I could onto mastery. ( now haste rating of 800+ )….siting on 13% now (about 1k mastery rating)…

I have lost close to 2k dps on boss dummy, cant even reach 13k.

I know a dummy isnt the best way to test the new possibility of dps rating…..but this worries me a lot.
I also switched to avalanche instead of hurricane on weapon.

I’m just not seeing haste as being the worst stat. Im considering reforging and enchanting everything back to haste prio.

Mastery : 12.20 %
Haste : 11.7 % 1500 haste rating
EXP + HIT cap
Crit : 10.2%

and my dps
Dummy HC start 20 k and after 4 min i am on 16 k Stady DPS
Raid 25 man i am always top (if i dont die from agrro:)) Start with 23-27 k and in most stady fights i go 20-21 k end of fight . On non stady fight For example Atramedes i was on 17.5 k at the end of fight .

This is my char you can check
http://eu.battle.net/wow/en/character/stormscale/adamos/advanced