there's a suggestion thread floating around, you can add it there, maybe in the future. though the discount would probably be felt on your side of it. you can set up a deal with promo canvas, that would be lower, but stuck at a few sizes.
yes I did a discount code, it would only work with the canvas promo if they were ordering more then one of the same. But if you have a reastuart or business that is looking to do their place up with different prints that would not work. thanks for the sugestion.