I think with what's coming up, I'll be changing a few gems around for haste. While I haven't done the math, with a healthy balance of crit/haste, it'll be more of a gain. I'll be collecting the Mp5 Gear, just in case, but chances are I won't even equip it. Unless our teir set is vastly superior, it looks like we'll be running around as transformers till the next content patch. Mp5 was nice when FoL was viable (think T4-Early T5) and FoL was good.

I don't think they noticed they've totally re-worked everything. I don't like what's coming up, and the fact that T8 gear (warrior preview) is T7.5? I believe, it's just not amusing. Not sure what they're trying to do.

One of the things that we have to keep in mind is that MP5 is replacing (mostly) crit and haste on this gear. Now, haste is a throughput stat, so it does not really correlate well with MP5. That's just a change of philosophy; and we do all recall that developers have said they are trying to get away from "frenetic" healing styles. Now the question becomes-- are you willing to sacrifice crit in your item budget for MP5.

A little over a month ago, I made this post:

In other words, the point at which MP5's item budgeting becomes an equal benefit to crit (for pure mana regeneration) is when you're casting approximately 2.41 Holy Lights every 5 seconds. That means you're landing a Holy Light once every 2.07 seconds, or about what I do right now when I don't have judgements of the pure up (+lag).

Math:
764.4*0.0217*X=40; where X=number of HLs cast in a 5 second time frame.
Solve for X, X=2.411457


Edit- Real WWS parse evidence. Keep in mind that Patchwerk is a very immobile fight that requires little movement and plenty of HPS pumping, and thus will bias more towards crit than MP5:

My recent Patchwerk parse, Wow Web Stats
I have no reason to stop casting HLs here, and I cast 1 every 2 seconds. An additional 100 item points of crit would have saved me 1376.8 mana, whereas an additional 100 item points of MP5 would have given me 1328 mana. Very, very comparable.

Here's Zaroua of Premonition during a 2 healer Patchwerk, which is also the fastest patchwerk kill on record, the sort of fight where you'd expect MP5 to be useless compared to crit due to chain casting: Wow Web Stats
He cast an HL every 1.62 seconds, making his gain from an additional 100 item points 776 mana from MP5 and 995 mana from crit.

For KT, a more well rounded fight in general, his Crit/MP5 numbers look more like 952/1272 (mana saved from 100 more crit/MP5 over the fight's length), and mine are a bit more ridiculous-- 985/2568 (we were running 5 healers and I had to flash heal a lot to sneak in effective heals).

Right now, I'm thinking PoJ and Sanctified Seals are superior because a few of the fights on PTR have had some movement components. Regarding the glyphs, seal of wisdom, holy light, and likely holy shock if that goes in (divinity if not).

If our mana regen doesn't change, then Divinity doesn't seem so useful even with the buff. I would also get Shock, because more instant heals with all the running from the various types of fire in Ulduar will be helpful.

I was going to point out pretty much the same thing in response to the X points of crit's mana return being comparable to X points of mp5.

While Mp5 is purely mana return, crit is also higher HPS and burst. So I would never trade the same or even slightly higher mana regen for the amount of crit that gives me comparable mana return. Crit triggers your Holy shock procs, crit gives you mana, crit gives you HPS, whereas MP5 gives you, uhm, mana.

Thing about haste and mp5 is that they work against each other. so if you get a lot of one, then you have more freedom to stack the other. We never aimed at stacking mp5 in wotlk, because we never felt uncomfortable with the regen (given enough intellect) Haste on the other hand never lost it's value in high-end raiding.

If gear gives loads of Mp5, I'll surely feel more comfortable to stack more haste.

There's nothing special about Crit HPS over the short term, other than the fact that it comes in bursts (ie spell power/haste helps you in a steady way, whereas crit comes and goes on its own and in bursts).

100 additional crit rating would increase your overall HPS by 1.085% (2.17%*0.5=1.085%)
100 additional haste rating, if starting with 500 haste+JotP, would increase your overall HPS by 2.3077% ((1.54/1.50-1)*100=2.3077%)
120 additional spell power, if starting with 2200, would increase your overall HPS by 5.455% (((2320*1.85)/(2200*1.85)-1)*100=5.455%)

Interestingly, 100 intellect (126.5 with BoK and Divine Intellect), because of the 0.759% additional crit and 25.3 spell power it provides, actually increases your HPS by 1.5295%.

In other words, by item budget, Intellect provides a greater boost to your HPS than crit, demonstrating how weak an HPS stat crit really is. If you want throughput, get it through haste and spell power, don't rely on crit. And none of this includes the fact that haste and spell power are both more effective sources of HPS from a utility standpoint.

Just to clarify, I'm not saying that crit doesn't, in addition to its mana return, give additional boosts to HPS. It does. But to say that this effect is so great that it makes crit dwarf MP5 in usefulness is false.

I very much expect to see more KT-like parses than patchwerk parses in Ulduar, meaning that I will stocking up on the MP5 equipment and forsaking crit as a regen tactic. I also see myself gemming less for intellect and more for SP and haste as I don't anticipate having to stand still and chain cast HLs (the only situation in which stacking Int has shown itself to be useful so far in Wotlk) in most of the Ulduar fights that I've seen. I may be wrong, and I would like to hear from people who have actually done testing in Ulduar, as I have not been able to experience it first hand thus far.

It seems like you do a large component of HL spam for the Steelbreaker portion of Iron Council (could be the entire fight if you do it on hard mode), Frozen Blows part of Hodir (short part of the fight), during the AE component of the Deconstructor. I missed Kologarn testing, but I assume you'll use it for the people in the fist, maybe more. And judging off the videos from Europe, there is a ton of damage going around during Freya, and after Thorim joins the fight. So it may be situational, but since INT provides a really nice balance I think it will be wise to continue to stack it.

I only did one encounter, while there was lots of movement I still had to chain HL with a few Shock. HL is expensive, so stacking int makes it more usable.

One thing I'm curious about from those parses -- both of you didn't attempt to judge at all during the Patchwerk fights according to WWS. Is judging to get 15% haste a bad idea/not required during Patchwerk?

Two pages ago, people wrote tips about how to reduce movements during fights in order to be able to spam HL on tanks (as most bosses in ulduar deal approximately 20k on 226ilvl prot warrior)...

So, to my mind the question would rather be what will you choose between Int and haste depending on which fight and why. More feedback about this would be great.

Then...to read people still discussing about mp5 vs crit is definitely boring.

For me, it was choice... I can keep up OT1 in a 2-OT strat no problem casting HL every 2 seconds. I just keep hitting HL without JotP and it works out just fine for me in terms of mana consumption vs. HPS.

For him, running a 1 OT strat going for a speed record, it's an impossibility. It's simply too great a risk to spend the 1.5-2 seconds judging the boss when the OT and/or DPS can get jibbed easily in that situation.

Also, it's rather impressive to be landing an HL once every 1.6 seconds with no JotP. I assume he probably had JotP up from hitting a rat to begin the fight. Also he had heroism up for 40 seconds on a 1:37 kill. Between Heroism and having JotP up (probably) to start the fight, he was hasted almost the entire time.