Holy fuck, that's beautiful. 10/10
I know they won't, but it would be great if they'd offer the option for a blood mage collar for the helm and a non-robe version of the chest with plate pants.
And also a Blood Knight palette swap with gold -> red and red-> black.
Eh, like I said before, the key pieces have such stellar extra geometry that you can swap them around with other gear and as long as you're matching up the colors it should look appropriate. Most of the Horde PVP tier recolors in the game are some combination of red/black/gold.