I feel that a nice QOL improvement would be to given two pieces of a set when you win a duplicate/2x promotion in the th. I just pulled 2x shaman's headdress from the TH adamant Chest and I only was given 1 because it is a unique non-tradable. It would have been satisfying to get 2 pieces of shaman's gear instead of receiving 1/2 of my winnings. Either that or being able to trade for another shaman set piece like other sets would have been nice. Just a thought!