I'm not the first one to come up with this idea but I hate to see all these armors go to waste (heraldic rare and epic) forerunner black steel commando Glorious/cavalier especially the crier armor. In order for this vanity shard to take effect it should be a leaderboard reward for players who are silver/gold . those who are gold would get two of these "shards" those who are silver will only get 1. you can either convert a helmet or armor of your choosing. Those who say the armors would lose value, they won't in fact they'll raise in price due to even more rarity. These shards would be tradable.

Qna( why not make these a plat tier item) because if they were plat tier almost everyone one have one and there would be too many vanities .

(Why not just make the rare armors into leaderboard vanity) because they're will be too little of them and they're costs will skyrocket.