If you could add or update one feature in the game, what would it be?

[Texxi]

I would LOVE to be able to add a note to a player on my Friends List. Coming from WoW, this helped tremendously to remember where you met people + helps if some of your friends are addicted to Fantasia and namechanging to avoid confusion.

[ItMe]

Glamours have been mentioned twice already, so instead I'll say The Companion System still has a lot of untapped potential. And especially since Yoshi is trying to make this game more and more solo friendly... maybe they could... you know... expand it~

You can spec your bird out to function as one of the 3 roles. But it'd be cool if, instead of just linearly picking up every ability, you had skill trees so your bird could specialize at healing a specific way, focus on DPSing differently, etc. That way you can build it to best compliment what class you're playing or what you wanna do with it
- AoEs for fighting groups
- single target focus for fighting Fate bosses
- a ranged spec to better avoid enemy AoEs
- etc

[Novae]

The option to turn a private house into a FC house.

[Kolsykol]

Allow us to dye individual parts of gear.

[Reimmi]

Copy wows transmog system in addition to ff14's dying
Collect a piece, added to your collection and can apply it without space limitations

[Bright-Flower]

Combat instead of what we got you would fight, dodge attacks similar to dark souls, having to manually roll, block,parry.

Also to change almost every job to their orginal ff styles. With blm gettimg all elemental spells, dragoon getting invunlable to attacks, bard and archer split into 2 jobs.

Remove acn and put sch as 2nd to conjuring
Put smn as a 2nd to thaumage.
Add theif as A a 2nd to rogue

All new jobs made to start at either level 1 or 30 (50-60-70-80 )is way to high for starting a new job.

Remove job lock from weapons.

This seems less like a feature to add and more like you want FFXIV to be a fundamentally different game from the ground up lol.

Copy wows transmog system in addition to ff14's dying
Collect a piece, added to your collection and can apply it without space limitations

For a new suggestion on my end though that I think nobody's mentioned yet, a sort of dungeon/raid/duty log where you can easily in game look up what drops from different duties and bosses. Largely for an in game resource for glam hunting.

[Hammerhorn]

A glamour system like ESO where u can collect EVERYTHING but it doesnt take up space.

[Escalon]

Update Character, Armor, Weapon textures from AAR and some HW
Update Character animations (especially for Elezen, its been 8 years now)
Update Chocobo companions. (Better Ai, Flat Stat Boost and New Caster Style)
Update Grand Company Ranks, Give us more higher level armor and weapons for Seals
Update Squadrons with new classes and skills, Increase the cap to 70.
Update the Inventory system, when maxed out, you really do not need 3 full bags for quest items, remove 2 and add them to the normal inventory.

And most of all, START TO WORK ON A NEW ENGINE THAT CAN HANDLE THINGS IN THE FUTURE BETTER.

[Kennar]

Let me view Key Items while sitting. Also, let me use certain items (minions, treasure maps, etc.) while sitting.

[SugarPuff]

Expand the trust system to include all normal dungeons and trials, while also allowing anywhere from one to seven actual players to participate. Essentially, enable much smaller groups to complete normal difficulty content without blasting through it unsynced.