Downloading In Rest Mode
One of the most annoying aspects of the last generation of consoles was if you wanted to download a game it required users to leave their Xbox 360 on for its entire duration. Now not only is this inconvenient, but it would also halt your gaming since most updates stopped if you started another title. Thankfully, this all changed with the Xbox One, which allows users to not only download updates in rest, but entire digital games.
In an era where game file sizes are getting bigger and bigger, having to keep your console on during the entire duration of a download would be unrealistic. Since these can take upwards of 1 to 3 hours (depending, of course, on file size and your storage capacity), rest mode can free users up to work on other things without having to monitor the progress of a download bar. Heck, you can even watch Netflix or a movie while you wait for the game to download which is clearly a win-win.