RIT/NEC sounds like an extremely complex job, needing to juggle not just your multiple pets, but the Ritual circle mechanic and your own spellcasting on top of that. Needing to do so much at all times and the frailty of the pets make me think it might not be that effective as a magical DPS compared to the BLM and SMN, which are more straight-forward.

I really don't like the Tractor ability and think it should be tossed. An ability that allows you to reposition your allies is just begging to be abused to troll other plays, specifically other caster or healers who can be interrupted from their casting by the moment.

I'm also not too sure about Drain or Aspir.

Energy Drain essentially does the same thing, but is limited in availability due to needing Aetherflow charges to use, while Drain and Aspir seem to be able to be used freely with no limitations. I can kinda be okay with that, since Aspir is supposed to be the class's main MP recovery tool, but I feel like there should be at least some kind of limit to use (with an appropriate buff to it's potency, if you wanted to make it more like a THM/BLM's quick Blizzard III to recover MP).

As for Drain... I'm not sure how best this should be reworked, since as a spell it's still a copy of Energy Drain (without the Aetherflow limitation), but as a buff it's a copy of Bloodbath or Life Surge. Should think on that more.

As for cross-class abilities, there's no reason this class should have access to the Conjurer or Arcanist abilities. The best cross-class abilities should come from Thaumaturge and Archer. THM gives you Swiftcast, which is amazingly helpful to anyone that casts spells (on top of Surecast, which is less helpful, but still nice), and ARC gives you Raging Strikes (which is about the only pure DPS boosting cooldown casters get right now).

Lich I'm not fully sure I understand, but if I'm understanding it correctly, I'd rather raise a party member back to life than into a temporary state that has weaker abilities than their default class... and a party member dieing is really not something you WANT to have happen.

And on top of all this, Enkidoh had the right of it, that I really don't think Necromancer could be worked into the story in a favorable way. Anyone caught learning Necromancy would be killed on sight, since that's the kind of magic you need to sell your soul to the void to learn.