Could more items be added to the exchange?
One idea would be to add to new starter pokemon sleeves and deck boxes. Only change needed for those would be the starter pokemon and maybe some slight color changes.
Another thing to add could be the mini set packs to the exchange so people can buy the packs as the sets were not as widely printed and are much harder to obtain now.
Maybe even add coins, deck boxes, and sleeves that are already in the game but not obtainable.