You guys need to SLOW DOWN for a minute and think about how reckless another combinatory job-system would be, as well as how the flavor of the jobs available pours over into the flavor of Eorzea's setting. So, considering this, let's look at what we flavorfully have to riff on based on the 3 city states.

Limsa Lominsa- A city on the bay, home of a powerful Navy. For the sake of this, it makes sense to have Pirate/Picaroon-ish/Thief, Berserker, Gunner/Cannoneer, Paladins and Dragoons.

Gridania- A city-state hidden in the epicenter of a forest. So it can be expected that Geomancers, Ranger/Hunter, Beast Master, Sage/Elementalist/Magus or other such jobs could hail from here.

Ul'Dah-A city-state that thrives on trade, prize fighting, militias and priesthood. Devouts, Monks, Thieves, Fighters, Bard/Clowns are all sensible choices

Ala Mhigo- (spoiler warning): Since a large portion of the plot is about Ala Mhigo falling to the Garlean empire, this would actually make for a great origin story for the birth of Eorzea's Dark Knights who seek to turn the Garlean empire's own machinas against them to avenge the fallen.

This doesn't mean that all jobs must be inherently flavorful- but it makes more sense than not. How much of a buzz kill would be to see Paladins which look like walking shields again, or color mages, if they don't really have any other place in the environment other than the game's title?