Add exotic sparrows that have unique perks in game, but make them only attainable in hard activities like raids or presage endgame activities but make them have a hard chance to get like the sparrow from VOG. For example, in prestige leviathan, players have a chance of getting an exotic sparrow that have a extra perk that is unique of going super fast at the cost of sparrow or do sparrow flying, like those kinds of perk that make it sparrow you want to get and always equip.