Now before i get into this i know this has been suggested a few times but personally i would love for it to be the 4th healer and hope more light is shed on this. In Final Fantasy Tactics you had Alchemist's that could throw potions to heal/revive players. Why can't we do this in FFXIV? I would love to see an actual combat Alchemist job that is a healer that can throw different potions to heal or revive players. They could also have skills that could buff party members etc. Their weapon could be a beaker and flask kinda like how Red Mage has the sword and floating crystal. The cast animation could be them pouring something out of the flask into the beaker then throwing the beaker at said player for heals. I don't know but i would very much love this.

Another example of an alchemist class would be Ragnarok Online but without the pet.