Since there is trading and selling being looked at for Destiny's economy there has to be intrinsic value associated with items being traded by the players. Now Bungie has stated that weapons and gear will have perk trees assigned to them that unlock as you use them. But here's a proposal for a feature that could help in the sales of these weapons and that is weapon stats and much like how a player gains ranking then perhaps each weapons and armor can attain this symbolic value as well as the player engages in Destiny's MP and PVE. So a MP players walks into a game and kills 20 players in a match and the gun retains the info much like how our own stats and history worked in Halo. Now it would gain value as the gun retains the player emblems and names of the foes it was used on. Can you imagine the bidding war on a gun that took down a celebrity in the competitive arena? Now the Player gets tired of his Duke and decides to sell it on the market. It's maxed out on the perk tree and has a notable MP history. I think the players who fell to it should be notified its on the market place for sale before every one else. If they buy it they can remove their own emblem and name from said weapon. Keep it or put it back on the market but now you have this driving emotion to keep an eye out for this weapon if you're one of the remaining 19 players who got popped by this gun. Now you'll have some bidding going on if this means these players specific to this weapon can claim it to remove their emblem. I believe that those remaining 19 players should be notified first and given a say a couple hours head start on the bidding process. When the hours up the gun is fair game on the open market. This could also work on PVE where the gun also retain mission history and locals of bosses it dispatched maybe giving maps of the locations and fortresses it's been in. There would have to be some sort of driving force or information for PVE players to purchase said weapon. The Player selling it could put in a disclaimer. This gun as been to Hellmouth and back. Need a map of the sixth floor only x amount of glimmer and it's yours. So beyond the perk tree what would make you buy some standard affair starting weapon?