That sounds so fantastic. This would be a great productd for a startup. Just a small box, USB-C powered, which performs these easy simple tasks, but absolutely reliable and a pleasure to use. Perhaps like 4 buttons, nicely differently colored or labeled, for several rooms. I am thinking, people had never troubles operating their TVs when they just had buttons for a few stations and the volume.

Even as a software delveloper, I would be delighted to use that, for the elegance of the concept and not having to dig through menues, toolbars and whatever else.