I thought DK and Druids were on the same tier token. Might be something to consider in the long run.
A shield tank always compliments a face tank. War/pally
since we lack the need for hit cap/exp cap
Are you sure? I've fallen behind on my druid info, I was under the impression that DK's were the only tank that could over look hit/exp.
Stamina >= Agility > Dodge = Mastery > Crit > Melee Hit (7.5%) = Expertise (7.5%) > Haste
Is our stat priority, so pretty much every stat save haste is above hit and exp, you only shoot for those if you dont have any, iv found that bear tanks can get away with about 4-5% hit and be able to successfully tank in raids, i can say thats true because when i did the first four bosses in MV i was tanking there with less gear than i currently have, and with about 4.5% hit, and about the same exp, and i had no aggro issues, and no real overwhelming problems with dying other than to that scorpions attacks >_> i love dying to it! 1.5mil hit!!
EDIT: And as far as dks go without the hit/exp cap
Survival: Stamina > Mastery > Parry > Dodge > Melee Hit (7.5%) > Expertise (7.5%) > Haste
Control + Threat: Stamina > Mastery > Melee Hit (7.5%) > Expertise (7.5%) > Parry > Dodge > Haste
So DKs are set up the same way as druids for the most part, only if you have threat problems you go for the hit cap, but rage building is more important because of the mitigation and the self heal that scales with your HP.