DPS display could easily be solved with a system already in game.

[kpxmanifesto]

What they could do, is keep an average score (not show actual DPS) for each job in that duty, and let you see your own score compared to that score. Being job specific, you will not be able to use it to exclude specific jobs as they won't be ranked against each other. This may be something they wouldn't shy away from at least.

I like this idea, but the mechanism for scoring seems arbitrary to me. What would this score calculator use to calculate the score other than using statistics that are already commonly used(total damage dealt, DPS, total healing dealt, HPS, etc.)?