Watch it, and their subsequent response here: http://www.youtube.com/watch?v=4_GZ7TJxpgM#t=1m10s
The relevant part of the question, to this thread, is where she points out that our minions don’t benefit from Crit (an obvious bug), nor do they benefit from our Mastery.
Blizzard’s rationale: The Crit bug will not be fixed till 5.0 because it might disrupt secondary stat weights for Unholy DKs right now. Disruption is bad, etc, etc.
While discussing this in the Acherus IRC, we were forced to acknowledge one point: If the Crit bug were indeed to be fixed, Crit would be valued ahead of Mastery. This wouldn’t be something Blizzard would want to introduce, would it?
I was curious: What if minions began benefitting from Mastery instead (by this, I mean doing additional damage as shadow damage)? Would it then eclipse Haste and upset stat weights?
As it turns out, nope. Letting our minions benefit from Mastery would be a decent DPS gain and wouldn’t affect the priority in the slightest.
At this point, we became a little more daring: What if minions began benefitting from Mastery and had the Crit bug fixed?
The answer is pretty hilarious, if not astonishing: The Unholy stat priority would not be affected in the slightest by these two changes. While they’d be closer in value to each other, we’d still value Haste > Mastery > Crit.
No disruption to speak of!
It’s been acknowledged that Unholy hasn’t been a popular or in demand spec since the advent of 4.1. We already know that the 5% Unholy Might buff won’t end up doing anything to affect this.
We’re also discussing how the 10% AP buff to Blessing of Might, etc, doesn’t even uniformly affect the spec because of our minions: http://us.battle.net/wow/en/forum/topic/3424684660
Allowing our minions to benefit from these two stats doesn’t just buff our DPS, but brings the exact same secondary stat “parity” that you mentioned as desiring for the spec.
What say you?