What would you like to see (differently) in the next Final Fantasy MMO?

[Kisshu]

Keep the strong story focus, but also give us smaller stories not tied directly to the main story(something similar to FFXI's add-on stories)
Keep the option for all classes/jobs on one character. Draw classes/jobs from past FF titles but add some new onces.

Utilize next-gen, have PS5/Series-X as the base needed to play the game.

One huge open world to explore. Running through a canyon you might find an open-dungeon entrace similar to Orbonne Monastery.
Seamless ground to swimming to diving.
Only quick-travel between major cities via boat/airship, then have to move out running or on mount.

Active use of vehicles and mounts.
Mounted combat, each mount giving different benefits (drakes are a bit slower but are tough and spit fire, chocobos are quick and agile, heavier mounts have charge or stomp attacks).
Mount capture and breeding system for rare mounts.
Crafters can build vehicles like wagons(move large amount of goods) and boats(cross ocean to new islands, ocean fishing)

Action combat, a ninja would feel like in Sekiro(style, not difficulty), able to jump to high places.
Different styles for each job, a ninja could be burst-focused(assissin style) or sustained-dps(ninjutsu magic style).

Make gear more interesting than pure stats. Let gear have job specific bonuses or enhance traits(assassinate cooldown reduction, ninjutsu potency), or more general enhancements for multiple classes/roles like fast cast or cure potency.
To avoid having one piece of gear be too good from mid to end game(like in FFXI), higher level gear will give better stat bonuses. Lower gear can be spirit bonded and turned into gems giving the enhancement(at a lesser bonus) which can then be socketed into the higher level gear.
Life-skills not tied directly into combat, some classes having sneak/invisibility abilities, climb etc.

Activities for guilds/clans/FCs of all sizes. Forced pop NMs(leve-like system). Load up a boat with people, travel to an ocean current to enter an Ocean Exploration instance, travel from island to island to explore and find treasure to store in the ships hold.

Don't be afraid to have players work to unlock skills/abilities or gear, leveling a class/job gives you the base skills and abilities, but then there are tiers above that(like FFXI's weapon skill unlocks, ancient magic for mages). Similar to ARR relic quests pre-Atma grind.

Edit: Fate-like events having an impact on the world: Beastmen attack a settlement and kidnap people, now you lose access to some services there untill rescued. Not killing enough predators in an area will scare away prey(can't get wool in the area because of missing sheeps), an event will spawn to cull the predator population.

A conquest-like system from FFXI. Each nation and the beastmen can hold territory. Beastmen will make the area more dangerous(more and stronger beastmen in the area), nations holding an area will get access to certain resources from that area in their city(buy crafting items easily instead of having to gather them.)