It would be cool if Bungie was able to show the percentage of users who currently own any specific item in the armory. Things like emblems and shaders would be especially cool because we could see what the rarest ones are. This probably wouldn't be easy with people constantly breaking things down and acquiring them but it would be really cool nonetheless.
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Good Idea, like have a spot in the tower like a billboard you can look at to see specific popular items people are using. Then update it every week at reset lol