Is FFXIV hinting Berserker, Necromancer, and Chemist next expansion?

[GrimGale]

and we already have Alchemist as a crafter.

Ah yes, remember how we can't have Gladiator because we already have Blacksmith as a crafter?

How could we reconcile the idea of a class that uses swords against a class that makes the swords? Aren't they all in the same?

If the only reason you have against Chemist is "The name is similar to Alchemist", then just that's purely superficial. It could be called Apothecary, Physician, Medic, Surgeon. Anything that implies healing using drugs and medicine.

"Oh, but a class that uses actual potions is not viable."
Of course they would not use Potions as they are in game. The "use" of healing items would be implied in the animations and names, they would not use actual potions. Just like Bard and Machinist do not use actual ammunition.

[Mhaeric]

Ah yes, remember how we can't have Gladiator because we already have Blacksmith as a crafter?

This analogy breaks down because Alchemists do use the potions they create. E.g. the Alchemist guild is part of the Phrontistery in Ul'dah where they house and treat patients. Not saying that Chemist couldn't also exist, just pointing out it's a bad analogy with respect to defining a difference between Chemist vs Alchemist.