The one thing I would like to see for FF14, is a "Wardrobe" system like Guild Wars 2
I really don't care for Guild Wars 2 as a "game", but I log one from time to time, just to see what all has changed. Well recently, they implemented a new "Wardrobe" system, and I have to say; it's pretty awesome. Not that the armor-designs rival FF14 or anything, but simply that it's a lot more user-friendly, and I love that it "stores" armor and weapon designs permanently for your account, instead of having to hold onto every individual item that you like the appearance of.
I know it's sort of in poor taste to suggest a developer to copy another developer's solution to something, but I think they really nailed how appearance-customization should work. I also dig that they have item-appearance be Account-wide, so that even your Alts can look awesome while leveling (barring armor-type and Class-specific restrictions).
In any case, hopefully the NA team can relay the message over to the JP team. :)