After the announcement of the new battle system being right around the corner, AND a new job system in the pipeline I am going to withhold my opinions and judgement on the current system. But I found nothing wrong with XI's job setup. Not to say they couldn't drastically tweak it but I really hope for some roles in PT based battles.

Making WS abilities more specialized for each class would be one way of doing this. Especially if they had effects like dispel, and weaken, or stun attached to them.