Suggestion: Deck

I might think of this the wrong way, so if this functionality already exists elsewhere, please set me on the right path. I usually finish a larger book in 2-3-....-100 reading sessions. My folder structure is quite large (large collection and all) so I have to remember what I was reading and where it is located (or search for it). It would be great if I could find what I was reading in a "On Deck" section in the homepage. Stuff could get there automatically (if you read more than 2 pages, let's say), but I won't mind a simple "Pin  to Deck" (and Unpin) / favourites / bookmarks, etc... Thank you!