I'd love necromancer be it healer or dps.

For dps I could see it being based around stacking a "cursed" debuff or so that has other commands that use stacks of the debuff to summon undead for a few seconds to do an attack or two before they wither away and flop on the floor then another that detonates the corpses in a small AoE.

For a healer I like the idea of it calling upon the deceased to protect the targets. Also the idea of a buff like Reverse making a reappearance. For those unknown to it it basically makes taking damage = heal and healing = take damage.

I dunno. There's a lot to play around with when it comes to necromancers. There's more to it than just throwing hordes of zombies at stuff(even though that usually is the most amusing imo)