Daydream 2.0 will support Google Cast, allowing players in VR games to beam their field of view to a compatible TV, Chromecast, or other streaming device. The other major addition is a built-in capture feature that will let players record their VR sessions and upload or share the videos of their virtual exploits.
For this not to induce motion sickness, they need some serious image stabilization. I hate watching feeds from people's VR PoV.
What they really should have is a way to get a spectator view of the experience. So, you're watching from a (relatively) fixed 3rd person perspective. Or, optionally, an image-stabilized 1st person view.
Of course, rendering from another point of view will either tax the VR device, or require the viewing device to do the rendering. So, it's not an easy goal, but I think a worthy long-term one.