Mark Book as Completed / Progress Bar on Cover View

In the cover view it would be very useful to have some sort of visible icon on the cover to display that the book as been read and completed. Especially in series, like for comics, so that you can visually see where you have left off. I’m thinking of something like in movie libraries where a check mark is displayed over a cover of the media has been watched. Additionally it would also be useful if the progress bar for how much left you have to read was visible in the cover view as well.