First and foremost, I've done my research. I've done a thorough search of Frost DW specs here in the forums and I read all the comments and arguments about one talent or another. Now, I have concluded on this build here:
The main points I debate in this build is the use of Killing Machine and the lack of Necrosis. Thing is, to take Necrosis it means I have to ditch Tundra Stalker. I know that Killing Machine has better returns on low crit, but not sure the crit that I'd have with tank gear with make it even relevant, it'd be something under 10% to crit for sure.
Alternatively I could grab full Glacier Rot, Morbidity (heals under lich form and lower cooldown on glyphed DnD is nice) and Deathchill for that last hanging point to:
Don't think I've missed anything, but feel free to point out if I have - or if there's better ways to go about this spec. Any kind of feedback would be welcome.