It would be fantastic to add a Proof feature which would apply a range of sharpening over an image for purposes of printing out proofs. Frequently, I find myself sharpening to the default or to some level which looks good on the screen and then the print appears over or under sharpened on the print. When I used to create sharpened proofs in PS, I created a layer and then sharpened the image and applied a gradient. This created a series of zones which I could use to assess the Proof Print. Hopefully, this concept resonates?