The best would be for me to have them as normal jobs with a fixed rotation and on top of that give side content to it. I mean bard is a normal job but they are still the only ones to use Perform. Have blue be a normal job that learns their normal rotation through job quests and that also can learn more fun skills through overworld monsters which they then use in the carneval. Win Win. It will be used for everything and those that want certain attacks can have them for special content.

Do that for more jobs along the way. Heck beast master could be the same. Certain beasts for content and more to collect to battle against each others or NPCs in certain places.