I get what Blizzard is trying to say about Light necromancy because whether or not you use shadow magic or the Light, you’re essentially trying to bring a corpse back to “life” but where as Shadow magic and typical necromancy leads to imperfect monsters the Light leads to wholesome regeneration and revival except for in certain cases where someone is so tainted by something that complete revival isn’t possible and so something like Calia appears I guess.
I’m not sure what the plan for undead paladins would be though, I can see people signing up to be revived in the case of gruesome death to continue their fight in the mortal world but is Calia really going to be going around trapping people in their half mangled bodies instead of letting them pass on?