@vkc I also enjoy Jellyfin, and I have to say that I agree with everything you said.
The one issue I have with it is that the Chromecast integration is not very reliable. I'm partly replying to your message to see if anyone has a suggestion for a replacement (which will also remove one more dependency on Google)
@loke @vkc I know it's not quite what you're going for but I keep a spare computer plugged into my TV. Not exactly ideal as far as user interface goes but I can also run some light games on it and watch youtube with sponsorblock and such