I’d rather just have a real dedicated supporter role personally.
Stick Bard / Red Mage / Scholar in there and you’ve got three of the most popular jobs in the game in the roster so nobody can say the role won’t be played (does Machinist even count as a ‘supporter’ anymore? Hard to tell with this game lol)

But yeah, as others have said, there’s no way they’ll ever try and adjust how roles work. They can barely balance the holy trinity; last I checked you can’t have a ‘trinity’ if all three roles are the same (dps) lol