Whilst I'd like the idea and think it'd be a great and add an extra dimension to the game. I feel we are too far down the rabbit hole for such a thing. Plus it'd make balance harder. Given the volume of playable jobs I feel the trade off has been to not have different specialisations, which from a development point may as well be different jobs/classes.

But I do agree that it works nicely for Blue Mage. It's a shame the limited job system isn't better, because we could find it easier to get behind more limited jobs that can fulfill multiple roles. But given the current Blue Mage patch is a lot better than the previous iteration IMO, so potentially it could have a positive future? Hard to say. But if the system does, I feel this is where the middle ground would be to have that concept of multi-role jobs.