I run several reports where I need things like all orders with discounts. The only reliable way to get this is to select each discount reason as an "include" filter (Thanks to people being able to type anything I now have 300+ discount reasons to add). It would be much easier to have it give an "is not blank" option for the discount field. That would catch all discount reasons (especially if someone can manually add a discount at any time that I need to know about to add to the report)