The problem with a wrapper as you put it, specifically one running on Linux, is DRM. The only way I know of to achieve the desired Widevine encryption level is running the service in a tab in Chrome. Not any other browser, not even Chromium.

Of course you could just bypass all that nonsense by pirating your media, and have a nice easy interface consolidating titles from all streamers - even retaining a network badge so they can see where a given popular show is airing - like what I’ve set up in Kodi for myself as well as boomer relatives.

Other than that I’d recommend Flirc for input via remote (or LIRC if you have a supported remote already and don’t mind some extra configuration)