Smart Coupons

I think it would be great if there was a “wildcard” option for a BOGO-type coupon. For example, I have 56 paints, with 4 variations each (224 different products) and I want to run a BOGO sale where they can purchase any of the products and get the same one for %off. Currently, the functionality isn’t there for this (at least to my understanding). So, if there was a “wildcard” where Smart Coupon would add a duplicate of the same product to the cart when the coupon is applied, it could work. So, if I bought a Pint of Color A and then applied the coupon, it would put another Pint of Color A into the cart at the %off.