I'm holding out hope that it will be reworked as a real job in 6.0 or 7.0. Wishful thinking I know.
Heck, they could even keep the current version and have the dungeon job start at 60 once you get there. A new kind of blue mage soulstone for blue wizard could be developed by the tribe that unlocks additional power but requires use of specific abilities. These specific abilities would be the full job versions of specific blue mage spells and they would be the only abilities possible to equip with the blue wizard stone. All of the required abilities would still need to be learned with the blue mage job before unlocking blue wizard. Later expansions would require getting blue mage leveled along with learning new abilities before then unlocking further advancememt with blue wizard.
Just spitballig here.
