I'm behind on a few shows and noticed that the watchlist only shows 3 episodes per-series I haven't marked as watched. This makes it so you have to click "View all" to see the latest episodes aired.. I now realize I haven't acquired several episodes for a show yet.
If possible, can you make it customizable how many episodes are shown per-show in the watchlist.. or perhaps emphasize how many episodes remain unwatched, in addition to the watched/total numbers.
Now I need to start checking the Calandar more. :-)