You will be popping Tigereye Brew during Rune of Re-Origination procs whenever possible. Therefore, 1 point of Critical Strike Rating would increase your critical strike chance most of the time while also providing 2 points of mastery rating during Tigereye Brew procs.
If you consider Rune of Re-Origination has about a 1RPPM proc rate (plus or minus depending on ilvl version) with a 10 second duration then we can say that it will have an uptime of around 16.6%. So 1 unit of Critical Strike Rating would give you the following:
- 1 Critical Strike Rating 83.4% of the time
- 2 Mastery Rating for a percentage of all Tigereye Brew stacks consumed (maybe 50%?)
On the other hand, 1 point of mastery rating on your gear would only give you 1 mastery rating for every stack of TEB you gain. Having 2 mastery rating 50% of the time is on its own equal to having 1 mastery rating 100% of the time. The extra crit rating you benefit from the other 83.4% of the time is just a bonus.
The difficult thing to calculate here is to figure out in practice how many of our TEB stacks generated end up being spent during Rune of Re-Origination, and how many don't. If you're waiting on a Rune proc and you reach 20 stacks of Tigereye Brew, you'll probably pop 10 stacks to keep from wasting them. Stack generation is going to depend on the fight, 4pT15 procs, and our haste rating. I think on average we'll probably spend 40-60% of our total Tigereye Brew stacks gained during Rune of Re-Origination.
I think the only question is whether we keep our haste and crit even in favor of a higher mastery on Rune of Re-Origination proc, or whether we allow one to get much higher than the other if we feel one stat is better than another. For example, at a low gear level we might want more haste than crit while keeping mastery just above our haste. At a very high gear level we might want more crit than haste to minimize wasted energy, and keep mastery just above crit.
One thing to keep in mind about our estimated 6776 haste softcap is that it doesn't account for the energy loss from Rune of Re-Origination 16.6% of the time. When our haste rating is frequently dipping to 0 we will want a lot of it so we can recover from the gap in energy generation quickly. This is why I think we will always want to maintain close to a 1:1:1 ratio on our secondary stats even if it means going a bit over the 6776 haste softcap.
Another thing we can do if maintaining a 1:1:1 ratio means our haste rating is getting too high is we can simply switch to Power Strikes which maintains a similar chi generation while allowing for a higher haste rating. It boldly goes places Ascension cannot go.
---------- Post added 2013-03-13 at 03:16 PM ----------
Regarding my question of how many of our Tigereye Brew charges will benefit from Rune of Re-Origination in practice:
Here is a log of a Windwalker monk with Rune of Re-Origination in a 4 minute fight with Jin'rokh:
Courtesy of Invection <WHATEVER WERE AWESOME>
By filtering for Tigereye Brew and Re-Origination I can see that in this example he spent 100% of his Tigereye Brew stacks during Re-Origination. That's a lot more than the 50% I guessed it might be.
Though he may have been worrying more about the mechanics of the fight and not optimizing his stack generation. As far as I can tell he spent 69 globals on Jab/EH in a 4 minute fight. I would think we could fill more globals than that if we stack enough haste to minimize FoF/Chi Wave. For example, he cast 9 Chi Waves but was only getting an average of 1.9 damaging hits per use of it. But at the same time the extra TEB stacks generated from doing so would probably result in us having to pop TEB outside of Rune of Re-Origination some of the time.
Maybe we should aim to have enough haste to sync our TEB stack generation with the RPPM rate of our Rune of Re-Origination, and have more downtime to fill with FoF/Chi Wave? Maybe, but I don't think so. With FoF not being useful on many fights due to the mechanics, Chi Wave going from being very buggy to somewhat buggy, I think probably we should just focus on high haste stack generation.
I really wish some of these lucky few would upload some logs of tank and spank fights like LFR Feng or Gara'jal. I'm looking at you, Runnmonk and Gondlem.