To make the new Edge Sharpen control part of the standard HUD:
0) Quit Aperture
1) Go to Library/Application Support/Aperture 2) Copy the file AdjustmentsDefaults.plist to a safe location 3) Open the original AdjustmentsDefaults.plist file by double clicking it. This should launch the Property List Editor with the file loaded 4) Unfold the Properties List nodes 5) Select the last entry in the plist (the one named 5) 6) Click on "New Sibling" in the toolbar 7) Enter RKProSharpenOperation as the value 8) Quit Property List Editor
9) Restart Aperture and enjoy your customized HUD!
That was actually how I originally did it. When writing the tip I forgot that Property List Editor is one of the developer tools and just went with whatever application opened by default when I double clicked the file. Oh, well Glad it worked for you too, though.