I would love multiple types of specs for the necromancer, each with a specialization to really hone in on the different weapons they would use.
Tank / Death Knight spec - Swords / Shields, Sickle / Shields, Axe / Shield etc. Maybe a 1h weapon specialization in the talent tree
Melee / 2h + Support spec - Scythes, 2h swords, 2h axes. Has evil weapon buffs and some support in a way of a heal based on their damage done to all party members within 10ft of the target (10s on a 2m cooldown).
Caster spec - Staves, Scythes, Grimoires, Wands, Orbs, Skulls. Includes some buff spells such as mana regen to their party like a shadow priest in wow tbc (but not as extreme). Should have spells like call of the dead, raise skeleton archer, raise zombie etc.