You asked and we answered! The ability to clone a scorecard is here!
First, go to Academics > Assessment Scorecards > select a Course from the drop down. Then, click the + sign next to the Scorecard that you want to clone:
A new Scorecard will open up with all of the same Details and Skills as the original scorecard. From here you can change the name and any other settings, and then click next to add students or upload a file, as you would normally:
Go back to the Assessment Scorecard Overview.