This game's Warrior is basically Berserker, Necromancer would not make sense at all in this game's lore (which kinda goes out of its way to say necromancy is a Bad Thing), and we already have Alchemist as a crafter.

So no, I wouldn't say it's hinting at any of them.

But God id kill for a real berserker .. not a warrior with a berserk trait.
Have you even done any of the Warrior job quests? There's far more of a "berserker" quality to the class than simply having an ability called Berserk.