Edit:
Translation from German to English (screenshots):
Herzstoß = Heartstrike
Nahkampf = Melee / Autoattacks
Todesstoß = Deathstrike
Nekrose = Necrosis
Todesmantel = Deathcoil
Auslöschen = Obliterate
Blutseuche = Bloodplague
Frostfieber = Frostfever
Seuchenstoß = Plaguestrike
Eisige Berührung = Icy Touch
/end of edit
I finally was able to do some PTR tests (problems with critical errors and massive lags).
I can confirm that the critrate seems to be buggy but not the way Krsh reported it.
Take a look at this image:
As you can see, i did ~8 min of testing and used 142 Heartstrikes. The HS critrate is rather low with 25%. Take a look at my character screen, i have around 34% crit with Horn of Winter.
Add the 9% HS crit from Subversion and i shoul get a much higher critrate than just 25%.
Maybe it was just bad luck because 142 cast isn't that much, but when i compare the HS critrate with the DS critrate which is at 36% it seems obvious that something seem to be broken.
The 36% DS critrate sounds "okay" because of 34% basecrit + 6% from improved deathstrike but is also lower than expected.
Additional notes:
DRW seems to copy your Epidemic talent. I have 1 point in Epidemic on the PTR and the DRW diseases last 18 seconds just like my own so it should be save to assume that with 2/2 Epidemic the DRW diseases would last 21 sec as well.
The DRW Deathstrike dmg ist VERY low compared to your own so i doubt that DRW clones the improved DS talent and/or glyph.
Same with DC.
Interesting is that the Meleedmg (autoattack) of my DRW is HIGHER than the Meleedmg from my Ghoul (not factoring in Claw and Gnaw)!
6% DRW Autoattack vs 5% Ghoul Autoattack from my total DMG dealed over 8 minutes.
I use the BS, DC, DRW glyph and my spec is 51 2 18 so this could change when you don't have RPM and/or DRW Glyph but Ghoul glyph instead.
So all in all the dmg seems very potent to me, after 8 minutes of testing at the Bossdummy my DPS was around 3400.
This is 600 more than i am able to dish out on Live with the same gear. Sure, ~300 dps from those 600 come from the perma Ghoul, but it is still pretty amazing.
My avg (noncrit) DS dmg (without DS glyph) is around 600 DMG lower than the average (noncrit) OB dmg, but when you factor in the fact that you lose 1-2 ticks of both diseases when using OB over DS it becomes pretty clear that DS is definitly the better choice now.
Avg DS crits are much higher than avg OB crits but i don't have numbers (forgot to write them down sorry).
Ok now some Ulduar stuff:
I was able to get into a random Ulduar 10men raid in order to have some fun with Mimiron. The group was far from perfect in terms of "melee friendly buffs" and the server was laggy as hell as well.
But i was very impressed by the numbers i was able to dish out.
We did around 8-9 trys before they deactivated the boss because of bugs (take a look at worldofraids for more infos about that).
But only the last 3 trys are notable because in those trys we were able to reach phase 3.
My personal avg DPS was around 4100. Highest result was a 5345 DPS try that ended after p2.
I used the same spec and glyphs as i used during the dummy tests but i am not sure that the BS glyph was activ during the bossfight because the only one with a possible snare was the DPS feral druid but he did't have infected wounds as far as i know.
So i guess that the BS glyph was NOT active.
And the ghoul NEVER stayed alive longer than 10-20 seconds which is sad but expected...
Here is a screenshot of our last try before they deactivated the encounter (and yes we were only 9 men):
Again:
I am very impressed by the numbers because for me it is a huge DPS gain so far and don't forget that during the phases there are "long breaks" where you are still in combat but have nothing to attack which should lower the overall fight DPS quite a bit!
Another very usefull thing to point out is that i need nearly ZERO external heal during p1-p3 (don't have much experience with p4 so i can't tell how it works there) because of pertty sick DS selfheal and AMS / IBF rotations.
The healers were very pleased because of that so they had 1 person less to keep an eye on.
I hope this was interesting to read and helps to further discuss the new 3.1 Blood DKs which seem to be very potent.
Edit:
Ok i did some extended testing of the critrate against the bossdummy, here are the results:
So i was wrong about the HS critrate beeing broken.
HS: 36,5% crit (241 casts)
Melee: 29,2% crit (250 casts)
DS: 44,5% crit (110 casts)
DC: 17,5% crit (40 casts, suddon doom procs only)
So it looks indeed like DS crit is higher than expected. HS gains 9% crit from Subversion and DS gains 6% from improved DS.
I have no clue why its critrate is so high... Maybe it recieves benefits from both, Subversion and imp DS talents? It would make sense because 36% +9 % = 45% which is nearly the DS critrate...
Another thing that comes to my mind:
Maybe Vicious Strikes is still affection DS and only the tooltip says it does not.
But hey i like it that way hehe.