Very nice. Love the way you provide so much additional information without it feeling crowded. And a sensible integration of the currently playing channel in PiP (or would that just be a description of the highlighted show?) Both would be nice, but screen real-estate is pretty limited.
I do have a question regarding your vision for the On Now tab. Does this tab cover the functionality for both the current On Now and Guide? After using channels for many years, we have finally shifted away from the classic grid view to primarily entering through the On Now. We still use the grid of course for scheduling recordings and looking ahead. But we mostly use On Now or just enter directly from the top shelf.
Personally, I would love to see the On Now combine both live shows and Up Next, somewhat similar to how the TV app (only without the live part). With the guide being a distinct temporal view.