While I like the idea of the FF:T system A LOT, I think that it would need a bit more tweaking to work for this game. Going with the idea than any class can equip any ability, maybe they should implement general "Job names" For example, if i equip a sword, shield, some sword skills, some curing spells, and some hate control abilities, I'd be a Paladin. If, instead of hate controlling abilities, i equip things like Bio and poison, I'm a Red Mage. The only issue I see with this relates to how gear affinity would work, but that could also be a factor in determining your job. Ex) Paladins need metal armor, Red Mages can equip leather or cloth armor, etc.