Simple idea! Once a week you can drop 1 legendary item into the machine (along with x amount of gold) and poof out pops another legendary. Can be totally random or close to the originals level. This means you have a chance of getting something better than a legendary you know you will never use. It also means if you are unlucky such as me and pull a lot of Legendary Treasure, and 1000 gold just doesn't cut it (I need 2 1/2 legendary treasure to sell to get one legendary item), you can drop it in the randomizer and maybe you will be less lucky! Yay!