5.)Virtual Personal Assistant
Microsoft is reported to be working on their own version of Apple's SIRI recently. Sony should be joining the race as well while their competitor hasn't rolled out anything yet. It would be cool to have a console that can anticipate my needs and respond to my voice commands. While consoles aren't really personal assistants, the software has far more potential than telling you the weather.
It would be so cool if you could ask your PS4 to look up similar games to what you've played and then command it to purchase it for you. I bet it could do so much more than that though.