Coupon Codes - SKU Specific

When creating a coupon, we sometimes want to limit which SKUs the coupon can be used for (or vice versa, which SKUs it cannot be applied to). When utilizing the SKU function when creating a coupon, if that SKU and an unlisted SKU are added to the order, the coupon will be applied to the full subtotal, rather than just the SKU on the coupon code. There needs to be a way for a customer to place an order for 5 SKUs, utilize a coupon code, but the coupon only apply to select SKUs.