Other than the fact that a lot of people within that particular game say they are against the implementation of trading because it "would promote RMT" (which looks like a trading system is not needed for that to happen in this case), it's usually illegal to trade or rent goods that aren't yours, especially via gaming. It is detrimental to the community and user experience as a whole and also a venue for money laundering. In addition, this practice is promoting scam activities within the game--a triple A game, and not some korean F2P mmo. Finally, this was a question/suggestion/request for handling special cases in general, not just RMT. The lack of customer support center is the topic here. There is a reason I posted this under Feedback and not #Destiny.