It would be cool if Butler could create a report for archived cards too, since I'm moving cards I'm done with in the archive, and I'd like to have a weekly report of the finished (and therefore archived) cards. Thanks!
@jonathan-verbeek you could trigger a Butler command when you archive a card to move the card to a list like "Done {date}" on another board so you could always see how many cards were done each day.
You can use the new DashCards power up to show you these stats at a glance.