Mix and Match Discount Modifiers

If a customer wants to use a mix and match discount for a buy one get one discount burger special, the discount can be setup to automatically discount the lower price burger but in the event that a customer adds any modifiers, the auto discount will not discount the item modifiers.  

The item based discounts have a slider for "Include Additional Modifiers".  It would be nice if that was available with the mix and match discount.