PVE Tanking - I think necromancers deserve some love. In pve they need some unique buffs for group since we have TT/Archdruid devyric sets, which give us "Major Vulnerability" also with "Empower" rework, Empowering Grasp - became useless. What about to give something unique? for example "5% DOT mitigation for all group" or "Group ult gen" or something useful.
It would also be nice to add "contro" to "scytche". (like Runeguard of Still Waters has...)
For example Arcanist tank has multieffects almost on each skill and a lot of buffs for group: Runic Sunder – 2200 Armor Pen, Runeguard of Still Waters – Group Minor Resolve + ad control, Rune of the Colorless Pool – Minor Brittle & Minor Vulnerability, Circumvented Fate – Group Minor Evasion, Arcanist’s Domain – Minor Courage, Minor Fortitude, Minor Intellect & Minor Endurance.
Necromancer tank has - "useless empower" and useful Major Vulnerability

PVP - remove "Minor Defile" from burst heal... or at least give Major Brutality and Sorcery passive.