Mr. Oka, he was only referring to base level and not job level as there is only one class that can reach job level 99 and that is super novice, but every class can reach base level 99, so there would not be a need for recalculating how aspd/brewing/forging/etc worked because the amount of job levels is not changing, just getting one more base level and about 12points of stats to work with, which at that level isn't that much anyway, or would at least be such a negligible difference that it would go unnoticed.
i'm not saying it should be raised to base 100, but your argument is just flawed as it has very little to do with the original request.