Crafting recipies for trials materials obtained from trials that were in game before a job was added to make a weapon for that job. Those weapons are basically just glamours anyway

Raids using 1 type of token instead of 6 different ones for armor and accessories.

More depth added to BLU. Things like adding new BLU weapons which boost or give bonuses to specific spells or spell families, or having bonuses unlock by slotting certain spells together like we had in FFXI. Also allowing them to be used/queue into open instance areas like Eureka and Bozja which do not have specific party role composition requirements.

Maybe a Fate series crossover/collab that gives us a full glamour for each job based on a character from the Fate series?

If they plan on continuing to add more skills to jobs then possibly enabling attack combo settings to 1 hotkey like they allow in PvP? This would free up some space on a few jobs.