Corsair: More Quickdraw Charges.

Dark Knight: A "Trick Attack" like ability used with an absorb spell and Drain/Aspir that shares the benefit of the spell with the person between you and the monster.

Paladin & Red Mage: a higher tier Cure spell similar to Cure V, that has different enmity properties, like a "Heal" or "Restore" instead of "Cure".

Red Mage: an ability that allows you to cast your next spell directly out of your HP pool, instead of your MP pool.

Puppetmaster: "Broadcast Antennae" Could be a Headless/Armless Frame, that instead of being a pet, its functionality gives the benefits of the attachments/maneuvers to players within range. Like a portable "Aura Machine".