I’m not sure that I agree that any class must have a distinct “purpose” other than fun. If something is fun to play, looks cool, and accomplishes the role of either DPS, Tank, or Healing, then what more do you need?
What is the purpose of warriors? To hit things with big weapons until they die. What about paladins? Hit things with big weapons but this time there is a golden glow.
But I’ll concede. These are cool unique things that a necromancer could bring to the table that would set it apart from other classes/specs.
- Ranged
- Healing Spec (The game definitely needs more healers)
- Utility through curses and hexes (curse of frailty causes target to take x% more damage from all party members)
- Potential ranged tank spec
- Potential summoner spec (unholy isn’t a summoner class, it has a pet but that is all. I’m talking full blow skelly boy army with golems that you manage. Maybe summons are your resource?)
- Potential true glass cannon. You are squishy as hell, but have a ton of survivability through bone spells and a slew of minions.
Most importantly though, the necromancer opens the door to explore a whole new part of Warcraft Lore. The Shadow/Spirit lands in wow are not void related, and we know next to nothing about it. Death is to druidic nature/life magic as void is to light, and there is next to no exploration of these themes in game except for maybe the Drust.