If you had the power to add one feature no questions asked, what would it be?

[SaitoHikari]

Completely overhaul Grand Company enlistment and transform Squadrons into a serious FFT-style gameplay mode, complete with differing lore-relevant stories and missions depending on which GC you're a part of (though you can experience the ones from the other GCs and factions like Ishgard later on).

[Simple_Barghest]

Completely overhaul Grand Company enlistment and transform Squadrons into a serious FFT-style gameplay mode, complete with differing lore-relevant stories and missions depending on which GC you're a part of (though you can experience the ones from the other GCs and factions like Ishgard later on).

Take this-

More Trust partners unlockable as quest rewards. Like, you earn Sidurgu by finishing the DRK questline, Aymeric through MSQ, Hien by completing Doman Restoration, and you can level them up by taking them through whatever dungeons you want same as the Scions.

-and this.

And ffffUUUUUUUUUUUSE them together.
And make more random-ass NPCs unlockable via achievements, challenge logs, questlines, etc.
And when I say random-ass, I'm talking "Red Meteor the Red Chocobo as DPS from completing objectives of Bozja" or "Completing X number of Anima weapon relics gives Anima the sprite as a variable-party-slot member"