For what it's worth I often find myself copying URL's or text, images etc so adding in a delete past clipboard action to these actions has been helpful. That way I can add the action and then when I go to paste in the screenshot or whatever I had copied previously it will be there to paste in rather than it adding the action again upon command+v.
Keyboard Maestro - Clipboard Actions - Image Click at the Center.kmmacros (24.1 KB)
By the way everyone that finds Dan's post useful should now see Dan's version of this on steroids, it's over the top amazing!