Improve the watchlist
When you add a tv show trakt automatically adds every season and episode of that tv show to the watchlist too.
Not planning to do this since it would be adding a ton of data to the watchlist this way.
Bob Cobb commented
well, how about at least having the ~option~ of adding an entire season? If its what someone wants, they are going to do it anyway, and be just as much data, but it would save them a lot of tedious work!