Same color trading is the best idea. . The no trading isn't there because they want you to have your own story, that much is obvious. It's in there so you're forced to play another class to use all the off-class armor you get, to lengthen a game lacking in content. In fact this is pretty much what every decision they're making in the game is based off of. No trading, no farming, and almost zero purple drops now, with cryptarch upgrades always going blue. In a vacuum, all of their decisions seem like anti-fun, because they are. Their goal right now isn't for you to have fun, it's to keep you clicking like a moron hooked on a mobile FTP game, so you're not completely comatose by the next time they're ready for you to pay money for something new. I'm not denying the game hasn't been fun, or arguing that I've been ripped off. But they're trying to make a game with a month's content seem like it's interesting for 3 months, and it's not working.