It's not a bad idea but I worry about a few things. Trading within your clan is fine but people will join a clan, make a trade and leave when they are done. Implementing a timer could solve the issue but add frustration if two people are in different clans and want to trade. They will take to the forums and we'll all get a headache! And the Raiding Party Achievement/Trophy directly interferes with my Clan. Exiled Trio. You should see the problem just by the name. Finally, EVERYONE will be selling their weapons/armour at the Maximum cost possible. Maybe a little under to sell it quicker but it will be a mostly fixed price with no deviation. Why sell it for less when you can wait a little longer and get more for it? Personally, I'd like a system like on WoW. (Never played it but my sister has told me the gist of it) At the end of a Raid, Nightfall, Skolas or Lighthouse, the team gets to see what they have won and gets to decide if they don't want it, want it or need it. For example, the Lighthouse, (True story) We got, Solar Summoner (Auto), Solar Scholar (Scout) and Solar Jewel (Hand Cannon). I enjoy using Auto Rifles even if they are bad, and my Buddy wanted my Scholar. So I would 'Need' the Summoner and my friend can 'Need' the Scholar so we both get what we want. There would still be RNG, but it helps stop duplicates and people can get what they want to begin with.