How about we just make it that trading to my accounts is the only trading in the game. End of discussion
PS. You have no idea how bad trading can hurt the game. Here is an idea. I have two rank 5-3 accounts. Both have more than 30 full myth items. One account is my main, and the other is my 2nd. Though, both are equal in terms of battle. If I decide to trade all my full myth items to my main, I will be dominant in the game taking over rank 1, easy as one two three. I could even have one account have making myth and trading with my main. oh, and don't think, "But, there can also be trading with the rank of items, only." I can argue everything you throw at me. Just an idea, I have 3 more email accounts. If trade were added in the game, I can easily make those three account make about 3 maxed items in one week. I would not even waste time on the base.