This game allows you to play any and every class/job that is available.
What jobs are canon to your character's personal lore? Do you have any lore around those jobs?
as some examples:
Rhel'a canon jobs are: dragoon, bard, gunbreaker, red mage, culinarian, fisher, miner, and botanist. I am contemplating if I should make sage a canon job (even though I struggle with how front loaded it is).
However, being that he is an everything alt I do much much more with him.
He became a dragoon after taking up the lance. He likes how high dragoons jumped and thought it would be fun. He would excel in equal parts fail. Sometimes he would be a body imbedded into the floor or somehow manage to find himself up in places he probably shouldn't be (like tangled in a mass of rope on a ship). He is also a floor tank sometimes. When he does manage to stick the landing (like say in a foe), however, he is hard to shake off.
He became a red mage because he saw X'rhun Tia. That was his main motivator. He does alright as a red mage and is willing to take up the role of caster if a party employing him needs it.