Earlier quoted context omitted.
No. Your expectations from one piece of software are completely unrealistic.
Is this sarcasm? I don't mean any disrespect or negativity, I just don't understand. I'm not familiar with this space, but I don't see why the aforementioned expectations are unrealistic. The only issue I can imagine is big media companies strong arming a player in this space (which I assume is what happens to existing companies mentioned). There's nothing technically impossible mentioned.
I think the Emby's, Kodi's, and Plex's of the world should focus on the "home Theater" space, making the best experience for the consumption of Movies and TV Shows. maybe music if they want to stretch
There should be separate apps for ebooks, podcasts, etc. I do not (and I am sure very few do) consume ebooks, and podcasts on my Large TV. That is where the "home theater" apps should focus, the TV Watching experience.
I understand sometimes people use a computer monitor, or even a mobile app to view it but I would image that is an edge case, and should not be the focus, when I want to watch a movie I am doing it on my 60in screen not my 5.5in