I would add more and enhanced character options. Taller au ra females, muscle definition etc

lore recorder in the collection. Bestiary, field notes like bozja, artifacts...

pillarless interior option for housing

a marketboard to mor dhona and the ability to carry more than one zodiac book at a time for a weapon

difficult 4 man dungeons. To balance the healer responsibility, dps will be given a phoenix down each and the tanks limited aguem vitae as duty actions. No more than 2 raises per player.

Solo trials/extremes/savages/ultimates to get gear, they are designed to test your skill with a job and in return you get bis and exclusive all class glams. A new bard mode based upon the WOL/WOD's trials during the story where they had no back up.
idk I kind of picture it as normal being telling it to the idyllshire kids, extreme being how it actually went, savage is what everyone makes out what you did and ultimate is the wandering minstrel's fault.

I'd add a garlean gauntlet raid whose tactics change depending on how the party fights. Think the 5 judges battle from FF12 remaster.