Something to go into the suggestion box. If you think people are picky about classes now, wait until PvP arrives! The only way to make it truly fair is if every picks Fox McCloud, no items, on Final Destination, 4 stock.

I think every class/job should have at least one battle (an optional fight would probably be best) where their particular role stands out and is needed. Some, like Ifrit, should be no brainers, as well as other elemental based Primals that will inevitably be introduced.

Something for the test servers (if picking classes specifically for their elemental abilities is exaggerated) is imbuing weapons with elemental damage materia again.