Its entirely appropriate because the amount of content thats available to progress from 20-28 is absurdly limited. I wouldn't even consider anything after the story missions actually progression as it is just a wall between you and the raid until the RNG system decides todays your day for an epic. An ingame econmoy never has negative affects on a community. People that want to trade items for items can still do this completely separated from any real money transfers as well as lazy people will likely be able to make purchases and eventually when they don't need the items any more... trade them off. And as for real money transfers... I don't see why bungie should even care its happening. None of the IP makes it out of the confines of bungies game, it'll never reach a point where bungie will lose money because of people selling their IP. In fact it will only make more money for them as well. Its also not bungies responsibility to care of someone loses an item. I've never played an mmo you could request an item back after a trade ... You could potentially just purchase a service for a bunch of high levels to run you through this high level content any way, so people can still make money from bungies IP if they really wanted to. Convenience is a huge thing, and I think theres a lot of things about this game that are super inconvenient. Even if you got an item that was for you class it still doesn't mean its useful, if its not helping any feed back loops or replacing any gear... it should be tradeable. For a game that relies heavily on itemization I think as much convenience and flexability with items is import, otherwise you'll widdle your player base down to super hardcore that think random drops is actually a meaningful thing. WoW's done terrible things to MMO games since the mentality now a days is to skip the actual game and play the end... a lot. Theres no point to a game like this to have an "endgame" and imo bungie was asking for the shit scores it got when they say things like, the real game doesn't start until 20 ... after you've played through 99% of the content. Endgame content is just a way of creating a bread crumb trail in circles until more substantial content can be released, and bungie forgot the more substantial content to begin with this time around.