Hands down, this is one of the worst ideas I've heard in a long time. They finally created content that can't be sold (unless the buyer is a complete idiot) by players to other players to progress their characters, and you want the pieces to be trade-able? No. Go out and farm them and stop wishing that other people can do your work for you.

I'm not trying to be rude to you personally, but honestly this is a terrible idea and the thought of it makes me cringe in disgust.