i haven't spent the time going through everyone's suggestions so if anybody else has already suggested this i apologize. My roommate and i have talked about this briefly before, but i think what they should do is add a social reputation that you build up like you would the cryptarch or your vanguard rep. It would only count if you were friends with the player and you'd gain reputation with another gamer every time you played in each other's fireteam. So, vanguard Roc playlists would grant you say 20 points, maybe 15 points for a standard mission(could only day each mission once per day with a specific friend, so you couldn't just keep doing a quick story mission over and over again)/ crucible map, a weekly would be 100, nightfall 200, a raid 150 (or maybe 25-50 points for each checkpoint), etc, but again only if you are xbox/psn friends. Obviously doing matchmaking wouldn't build up any social rep because you woudn't likely be friends with the person you'd end up playing with. Then say at rank one you could trade glimmer and mats, and greens, rank 2 blues, rank 3 purples, and rank 4 exotics/ raid gear. i mean it's just a loose system at first and would have to be perfected but i think it would help benefit those people who like myself run the weeklys and raids every week with the same people, unfortunately the people who like to solo things would lose out on this feature, but it's their choice to be anti social so nobody likes them anyway, haha, just kidding. But i'm open to suggestions or improvements. Personally i would love to see some sort of trading system implemented that also restricted people from selling gjallahorns on ebay, because let's be honest that would just be retarded.