If Necromancer ever managed to get the go ahead i can imagine a much different pet job to the ones that came before it. Where as with Summoner, ffxi Dragoon, Beastmaster and Puppetmaster theres some kind of bond. I see Necromancer as being cold. The pets are expendable fodder for the Necromancer to use however he/she wishes. Rising them from the depths with a spell, Rather than how can i keep my pet alive the longest it would be whats the most beneficial way for my pet to die. Like detonating them to do damage, Making them cover you/allies from an attack, Sacrificing them to buff/debuff, using them as sacrificial decoys.