I am wonder with what I was reading out the current beta if it is possible to update the API to be able to do something similar. I am envisioning using the shortcuts app to play the next episode of a show with the following steps for a shortcut:
- Open Channels on AppleTV
- Select the show I want to watch (guessing I would need to know a pass or show grouping ID)
- Use Play Up Next API call with ID selected in step 2