Ghosts should just be cosmetics, XP boost - not needed if levelling system were sorted. All sparrows should have instant summoning. We should be able to toggle Treasure Hunter in the UI settings. Ghosts, Sparrows, Ships = cosmetics and should all have a chance of dropping randomly from all sources as well as being for sale in Eververse. I would also like to see a floating skull ghost (as a Warhammer fan) pretty please Bungie....