Would be nice to have a few fan service fates or dungeons with unique vanity rewards. Something like a fate where Sin invades a portion of the sagoli desert with rewards being FFXIV outfits and weapons as vanity weapons. Nothing too hard, just stuff to add a little livelihood to Eorzea. Or an instances dungeon where a group of 4 players can challenge Sephiroth to a battle, making him extremely difficult with the rewards being simply bragging rights or vanity items.