a few suggestions (some URGENT)
urgent first ,I think it would be kind of helpful if equipped items has some kind of marker when viewing in armory chest so that we know they are equipped at a glance,it's quite a pain in the posterior to sell/convert/junk an items that is currently equipped.
Now for the rest :P
triple triad/tetra master - I know lots of people who would totally love this to be a part of ffxiv,its fun addictive and would be a great addition to the game and the play experience in general,it is a world away from questing/leveling/crafting which are obviously staple of mmorpgs,this would mean xiv boasts something that most other mmorpgs do not have.
Battle themes/other bgm - why not rework some of the old epic battle themes from previous games? that would be awesome