I found the visual side of the elite spec quite boring. I want a way to see on my character clearly that my blight stacks are passing certain thresholds. The elixirs are boring, from how the icons look, animations and function.
Maybe you could make the character glow a certain way when the blight stacks are going up. If there is such an indicator, i couldn't see it on my computer. It would be a huge improvement, both when playing in crowded pve, or when doing wvw as a harbinger or against a harbinger.
Overall, the concept is interesting, but it doesn't really feel like a necromancer for me. It feels like a dev group had a bunch of half decent ideas and they mixed it up in one elite spec. I will probably play it in EoD, but unlike the new guardian elite spec, i ask myself - "why would i play this over other elite specs, even old ones?".