Trading is a terrible idea. I am, however, all for sharing weapons and gear with your fireteam. I think that would be a suitable option. I feel like if they allow trading it would destroy the value of guns, it would end up warping the game environment, and eventually you'd have losers selling guns for real cash. Trading ruined Borderlands and Borderlands 2. By the end, almost nobody actually "earned" their weapons because they had a buddy duplicate it for them. Diablo 3 on consoles is pretty much a sham these days due to trading. Or actually, the ability to drop weapons and gear. Again the issue here is duplicating items. Gear value was totally irrelevant, and the Professional Russians weapons (mod weapons) are everywhere now due to trading and duplicating. I'd rather wait for my first Gjallarhorn, Hawkmoon, Red Death, Monte Carlo or HoPF to drop or for Xur to sell them than be able to just have someone give it to me. The fact of the matter is that trading, while nice, just isn't for Destiny. I think that the ability to share items with your fireteam would make for an awesome strategy. Are you one of the luck few people that has multiple Gjallarhorns? Hook up the other guys in your fireteam and for the duration of that match, they may use Gjallarhorn! Sadly, I don't know of an easy way to implement it, but it would be a cool idea.