The ability to select images for a product that will only be used on the ebay listing. A good example is that I may have text and logos on the ebay picture but not want that picture appearing on the Woocommerce store. This example could be that you select all the images you want for the woo store, and separately select additional ones for ebay. When the item is pushed to ebay it will use the woocommerce pictures plus the selected ones for ebay.