May I suggest something about the slot for the Off Hand Items for the Disciples of War and Magic. I mean some class/job have other weapons/items that they use for their abilities. Would it be better if we could have something that could boost those abilities if we have something to equip for it?
Take the Bard, whenever they activate a song, they will use the harp. Would it be nice to have an item called "harp" and have that item come with abilities that can boost the skills of the bard's song.
I think it would be a nice addition, since it will also fill up that empty slot. Only paladins for now have that slot occupied, with their shields. Other classes can have it as well.
The WAR uses a chain for an ability, so why not have a chain in that slot?
Although some classes would not have any items visible in their abilities, we can come up with new ones. Maybe Talimans for WHM? or Orbs for BLM?