This correlates with my own testing (using an addon to automatically cancel to minimize swings that don't gain fragments) -- yes, you get around 2x as many procs, but you go from an average of 189 strength (50% uptime of 270, 5% uptime of 0, 30, 60, 90, ..., 240) to 108 strength (5% uptime of 0, 30, 60, 90, ... 240). 81str is worth maybe 190dps or so. With cancelling, you get a proc every 10s (or 200 dps) vs without it you get a proc every 20s (or 100 dps). Doubling proc rate gains 100dps but loses ~190dps from strength for a net loss of 90dps. simcraft (hacked to autocancel the buff after 0.1s) agrees with roughly an 80dps loss for myself.

Proc cancelling isn't worth it for death knights. Paladins who can stack much quicker are a different story, of course. For us, it is better to treat the proc as gaining strength than a Tiny Shadowmourne in a Bottle.

There are just as many encounters where your pet stays on the boss all the time, while you have to move out and back in. The value of haste on those increases significantly, especially when compared to crit. This is why it's difficult to assess stat weights outside of the perfect tank & spank fight, because you can construct a case for pretty much any stat.

This is the problem statement, proc hits much harder than 2k on average. As a matter of fact looking at my festergut logs from last week (when i didn't get tricks) it hit for 3.3k on average which is consistent with the assumption of it scaling with most of our passive damage multipliers/debuffs.

My own spreadsheet shows proc canceling providing me with a tiny boost of ~15 dps on a tank-and-spank fight. Any haste effects though increase the dps gain (lust, engineering gloves, haste pot, etc). Depending on the duration of the fight (and hence uptime on said buffs), amount of movement or aoe (which favors keeping the proc for more spell damage), etc it may or may not be worth it to cancel the proc. I macro'd cancelaura together with melee strikes (and pestilence) to get the uptime of chaos bane up for aoe or out of melee range situations while still canceling the buff fast "enough" for pure tank and spanks.

On a side note, and I dunno if this has already been mentioned, but a great way to compare items with hit to items without it is to set the EP value of hit to be the same as haste when comparing 2 items. That way you can quickly tell whether it's worth it to get an item with hit or swap out some str/haste for str/hit gems. The main problem with this approach is you can "run out of yellow slots" which you can use to gain hit from gems. Still, it's easy to see which items are the "best" choice for hit (t10 gloves, ashen verdict rep ring, and polar bear bracers with LDW's necklace and garrosh's rage trailing behind).

Logs would show higher damage because of the 10% ICC buff; that scales the damage higher, but of course it scales the effect of strength, too.

Good point on the actual damage; however, I think the result still holds. Chaos Bane should be affected by Blood Presence, Ebon Plague, and Black Ice based on how other procs work. This goes to an average of 3150. However, don't forget partial resists bring this down by, I believe, 6% on average. So we're down just under 3k per proc. Even at this number, it's extremely close, but definitely a loss on anything that has any secondary target at all, or time you can't be on the boss but your diseases tick and pet can be, etc.

So the average strength, without cancelling, is 189str, which is 434dps, and a proc every 20s for 150 more dps -- a total of 584dps. With cancelling, the average strength is 108str or 248dps, plus the doubled proc of 300dps -- 548dps. Still lower, but as you correctly point out, closer. This average rate would speed up during heroism, but so would white attacks and other str-benefiting abilities. It still doesn't look to be worth it. To get to 584dps, you'd need 336dps from the proc itself which is a proc every 8-9s.

Even if it's close, or even slightly ahead, it just seems like a loss; str is so good and scales the rest of our stats that the static proc isn't the really nice part anyway. The really tricky part could be trying to get the best of both worlds (disease with chaos bane up then cancel it to build more stacks etc). But given mobility, multiple target fights, etc, I just don't envision it coming out ahead.

I may be stupid question, but has anyone observed the relation between the value of expertise and latency? I am currently playing with very high (300+ ms) latency with sub-frost, so I don't have that much free gcd so I keep myself slightly below exp cap.

Question. On the BiS "All currently known loot, sans 25m heroic loot and Shadowmourne" table. Wouldn't the HWT be the best trinket along with DBW? Cause it moved ahead of DV in the BiS Trinkets so why not BiS Gear also.

Has anyone done any testing between the Team Robot Simulator and Kahorie's Simulator? At least as far as it's utility to test potential upgrades?

Heroic DV is better than HWT. Maybe you're looking at normal DV.

Should I Macro Runestrike to EVERY ability? Or just IT-PS-BS-SS?

It's an on-next-strike ability, as a dpser you can just bind it to a comfortable key (I got it on F) - you have time till your next swing to activate it anyways, and even if you miss a swing, it's unlikely you're losing out on proccs.

Gargoyle don't have haste cap. Here is an extract of Arison's testing from last month.