I agree with this. Trading sucks. Nobody wants to play when you can just get max items at level 1. Not to mention, currency exchange becomes an issue. I can now buy gold for TLOPO, or pay money to have good items instantly traded me. Do I ever see this actually happening? Maybe not, but trading in general tends to devalue items that are actually hard to achieve within the game. Take, for instance, an item in World of Warcraft like Thunderfury. Thunderfury, originally, was an item that was impossibly hard to obtain within the game. It took many weeks/months to get because it had such a low drop rate. People who would walk around wearing it would be seen as gods because they had the item, and the potential to get that kind of recognition really made people want to play the game.
Now, imagine if Thunderfury were tradeable. I could pay $99 to have professionals clear the raid and trade me the item when they got it. Instant gratification, and people wouldn't even really care to look at me, since it is so easy to achieve. Sure, it may have a low droprate, but out of the 10,000,000 players, it's bound to drop for the 200,000 that farm the item professionally. Not to mention the other players who it drops for twice, who would just sell it for goldcap.