Prediction here -> They will make a VR version of this sports stadium app. It will become the biggest use case for VR (outside of geek circles).
Social sports viewing is VR's 'killer app'. It is what will take VR mainstream, and I believe it's the main reason for Facebook's purchase of oculus.
Imagine a VR sports stadium where users can sit in their own lounge, with their VR headset on, next to a avatar of each of their friends, who are in their own lounges. Everyone can have the best seat in the house. The virtual capacity of the stadium is physically unbounded. The VR adds the atmosphere that watching the TV doesn't provide. It also avoids the major VR problem of how to move around in the virtual world, because you don't have to. In the VR world you are sitting in a seat, just like in the real world.
Perhaps in many years time, no one will physically attend sporting events at all.