Ritualist > Necromancer Class Idea

[Enkidoh]

I wasn't actually just referring to Necromancer, but specifically it's default class Ritualist - based on your description it's still raising the dead through magical means, something that although the game's lore has stated definitely exists (look at what went on in the Tam-Tara Deepcroft), it's regarded by most Eorzeans as a horrifying and dangerous practice that is rightly outlawed (hence, none of the citystates would ever allow such a Guild inside their borders).

Ul'dah actually went to war years before against a nation that ended up resorting to necromancy to raise it's fallen soldiers (Sil'dih), using the situation as propaganda to take the moral high ground (turning the war which until then had been a dispute over water supplies into a moral crusade to send these "abominations back to Thall"), which resulted in Sil'dih's total destruction by zombie apocalypse, and thus, the technique is not only strictly forbidden, but completely shunned. So I still don't see it being allowed as a Discipline learned by adventurers.