If could add anything with no restrictions to the game.

[Arkdra]

A glamour catalogue. Please for the love of Christ SE add a glamour catalogue.

It's this! But setting aside that extremely obvious answer, I'd like more content open to blue mage. Specifically, blues let into deep dungeons, exploratory zones (though I'd be fine with them being barred from BA/DR:S), and a blue roulette that functions like mentor roulette but for blue mages. Also let into VC/Criterion later on down the line when the cap goes up to 90.