Everything sounds awesome, except for the implications around having a player economy. Those who played Diablo 3 will know what I mean behind the chaos that was the auction/free market. Players started playing the game to farm specific rare items to sell and make money off of instead of enjoying the game. That said, I believe the problem could be curved by limiting certain weapons to only allowing the one who found/picked up the weapon to wield it (like a super-rare weapon). That or level-locking weapons so that weapons can only be bought by a certain level player (say Lvl 42 SMG can only be bought/wielded by Lvl 42+ guardians). This could be flawed, Idk, what do you guys think?