Graphics, amazing textures and lighting feel,
Interaction with an actual crafting system instead of watching progress bars.
Unique job leveling choices to gain abilities from different classes.
Ability to wear any gear(purely for style points), though I feel it should provide 0 benefit to non recommended classes and +/- 5 levels.
No auction house and the ability to employ people to sell my goods (would be more awesome if I could customize them completely).
Solo play and casual group play(behest) making it easier for me to actually play the game.