I thought it was really cool that when turning in items for quests/leves/beastman/grand company. you dont have to search your inventory for the item. all you have to do is right click on the shaded item, that is showing what is being requests and pop the item comes up and you click it. Submit. Kinda like how you can add old completed items in to a recipe that calls for a completed item, in order to make it a Vintage item or w/e.