Guild Wars 2

Necros should be able to:

1. Raise Dead as zombies or phantoms
2. Eat corpses to regen
3. Siphon life to pets to keep them up a bit longer
4. Armor and weapons with suitable looks – bone, flesh, blood

I am sure you did not want to copy another game which shall remain nameless here, but they have some of the skills you need to add to give necro a true sinister feel and to make it more fun to play.

All these things were in GW1, but didn’t make it into GW2 for a variety of reasons. Corpse exploitation is a lot harder in a persistant environment where you could have many people whose skills all rely on exploiting that same corpse.

As for armour and weapons, there are several armour and weapon skins furhter on in the game which suit this aesthetic.