Best upgrades

Lookin to get some help from people that know builds best.

I use mainly Blood Transfer/Siphon with plague touch W/N, and conjure frost W/E.

Im wondering what upgrades to put on my axe. Its Currently:

6-28
15>50
Axe mastery+1 (20%)
Icy Damage

Icy: I use mainly to ignore the extra phys resistance that people bring, and when i decide to use conjure frost, but i have been noticing im more effective as a pure warrior with plague touch than a conjure frost warrior.

Axe Mastery: I use because i want the highest DPS possible, and is the only offensive axe mastery grip and adds a few damage sometimes with executioners strike etc. I dont use +5 armor or 30 hp because as i said i go mainly offensive.

Comments on upgrades and what im considering:

using 3/1 vamp for +3 dmg a hit, although the phys armor ignoring is nice, and Icy is pretty undefende