Don't sign your posts. Your profile to the left tells us everything we need to know.
It would be a huge help if someone would test this in a live environment besides me so I can see what your results are. Also armory me and if there is something I could do different I would love to hear it.
2/3 Virulence because I'm way over the hitcap, due to 2h frost gear and the lower hitcap with DW (NoCS).
I've been playing around with CotG but ended with 2/2 because there is nothing besides Deathchill (and Icy Reach) that improves DPS. Maybe 1/2 CotG and 1/1 Deathchill would be better, have to continue the tests.
I switched to the blood sub specc before Vezax, so i only have a Vezax and Yoggi parse (yeah.. not the best encounters to test, i know :/). But the new ID starts today and i will try and update my experiences.
PS: I'm also trying to figure out if the blood sub specc should prioritize Frost Fever > Rime > Obliterate or Frost Fever > Obliterate > Rime. And Rime should be used when Frost Fever is still active as a higher priority, right?