TuanHA, thank you for all the hard work. It's appreciated.
Unholy DK is pretty borked at the moment. It does not cast Bloodboil at all, which is a HUGE dps loss. I mean huge! I am going to post a few logs for you. One of them was running around Timeless Isle killing Yaungol in a group, the other is about 3 minutes on a Target Dummy. According to SimC I should be doing around 24k in a raid, fully buffed. At this time the CR will barely break 13k with full Timeless & 5-man party buffs. And self-buffed on a target dummy, I usually fall to right around 11k if I stay on it longer than 4 minutes. The difference should not be that noticeable.
To put it in perspective, SimC says I should do about 20k in frost spec fully buffed, and self-buffed on a target dummy with Singular I do about 16-17k in frost spec.
This is what SimC says I should being doing in a raid on a "Patchwerk" style fight.
This is the ability breakdown according to SimC for that 24K fight. As you can see Bloodboil accounts for 33% of the damage, so not casting it is an incredible dps loss.
This is what my ability breakdown looks like after 3 minutes on a target dummy. You'll notice that Bloodboil is not on that list.
And this is what my dps looked like for that same dummy fight.
Unholy should be extremely viable now in PvE post-6.0, but I can play it by hand much better than any CR can at the moment. For PvP people, I'm sure this works well enough. They probably hardly even notice the damage loss, but for PvE, this won't cut it at all. I'd love to be able to test your CR out on my guild's Mythic runs, but as it exists now, I cannot. They would know something wasn't right as soon as the numbers started rolling in. Even someone horrible at playing Unholy should be able to pull about 18k with my gear level, assuming they have at least a basic understanding of the rotation.
I'd be happy to help you out if I can. I've been playing DK's since their creation in all three specs in PvE primarily, but also in PvP. I have a lot of experience to draw from. Logs are below.
Have a good day, and thanks again for all the hard work!