

Also a self reply to add that I don’t use the downmix because I got lucky and in addition to free old PC hardware which most people in the USA at least can also get free or cheap if you are creative with old business hardware. The addition is I got an AV Receiver just barely new enough to support HDMI so I do have the full range of channels on very cheap speakers.
Having used Kodi elsewhere the downmix seems to work just fine and a lot of current and still fairly cheap sound bars can interpret surround mixes directly.










You forgot to mention the dog with its own added twist to the highly unusual family dynamics.