Not sure if this ability is for specific parties only or if any app can do it, but the integration of apps like ESPN/Amazon/VUDU etc into the oneguide has become especially useful for me as someone who recently all but eliminated cable (still have basic channels, but only because that bundle makes my internet $3 cheaper somehow) and uses the plex app regularly. I don't expect it to be a feature added anytime soon, but it should be a feature targeted in the future once the app is more feature complete with other plex apps. It would be beyond convenient to have Plex tabs (like recently aired) available on the oneguide which is accessible anytime on the xbox one.
Again, no rush but I definitely think if it is possible that it should be a feature added at some point to take advantage of one of the xbox one's most unique features, the OneGuide.
