I realise what I'am about to bring up is well, erm banned in these forums as stated here:
MOD Edit: The cataclysm discussion is closed, new thread for MoP found a place here. Starting with beta and continuing after it goes live. Don't spam or troll the thread and keep it to theorycrafting.
But right now in beta there is a point that I haven't seen raised much yet. Lets ignore the many issues with blood DKs right now in the beta and look at what is perhaps an oversight on the part of Blizzard. DW blood tanking.
As of a few seconds ago when I logged onto the beta SoB has no ICD and as such, the faster your weapon speed the faster you stack it up to 5. Lets look at a static time of 10s on rune recharge (yes, I know it's slow but for the purposes of this it works) with two different weapons.
Weapon speed of 1.6s (I grabbed a random weapon out of the vendor for jade forest gear)
In the period of 10s there is a total of 6.25 weapon swings.
Weapon speed of 3.6s (My old H DS weapon, pretty standard speed for 2 hands)
In the period of 10s there is a total of 2.7 weapon swings.
Right now I don't know the proc % of SoB but it seemed to be equal with both weapons. The faster stacks of this buff allow for a much greater heals from each DS.
Is this intended?
If it is then how will it affect raiding?
Will weapons that have a very fast attack speed be BiS regardless of other stats?
Would something like this push us to a point where our damage output is so low that we struggle for threat?