TPS spec for Unholy question

[Insidious]

Hey guys, I'm a first time poster. I leveled as unholy tank and don't generally have any issues holding threat but I am continually trying to improve here and there. I have been looking at making some spec changes to improve both dps and tps and wanted to get some input from you guys.

The World of Warcraft Armory

What I'm looking at is giving up some of the unholy abilities I generally don't use while tanking such as SG and CE. I'm also weighing the dps/tps advantage/disadvantage of Necrosis/BCB over Impurity, bladed armor or improved Icy touch. I know these can be very gear dependent but as a general rule would the trade off be worth it in the long run. Thanks in advance for any input.


-Insidious

[Jaeden]

Take Necrosis, Impurity, Bladed Armor full.

If unholy tank you do not need IIT and usually the Blood tree is a better subspec.