This thread is mainly addressing the clunk of using Necro as dd in PvE content.
PvP issues aside, my main gripe with Necro are it's 2 main damage skills: Blastbones and Siphon. Even after several patches those 2 abilities like to work not as expected that can completely ruin skill rotations. Siphon attaches to wrong corpse, Blastbones go AFK
Blastbones mechanic change
You can recast ability while skelly is active. Doing so makes it explode in 4m radius dealing half of tooltip damage and creating a new one. This completely removes blocking of ability until it hits the target when it's AI derps off and makes it stand next to target instead.
Siphon mechanic change
Instead of vague corpse targetting, you cast it like normal AoE. It leaves a damaging field that deals half of the damage. If there is a corpse in the field, it get consumed (like Graveyard does) and creates a full damage field and a tether.
Healing version does the same but of course it heals instead.