That the Cuaróns thought to show us this little bit of someone else's story that directly connects to Gravity. It's even cooler when the connection is made that this person exists on Earth, but their situation is also maddeningly frustrating. Beautiful that Jonás and Alfonso Cuarón found another compelling way to work together.
They are a very exciting father/son tandem. And I dearly hope to see more from the two of them.