While that sounds super cool, and I certainly wouldn't discourage you if it's an interesting project for you to work on, that others may also enjoy, personally speaking, it wouldn't appeal to me, because tvOS already has that sort of functionality built in, that works really well, and I wouldn't want to interfere with it: Enhance Dialog and add Voice Isolation
But perhaps this would be of interest to those using other platforms?
Personally speaking I'd rather see work on video enhancements that would appeal to lots of folks too. For example I've been tinkering with Multi4Channels and Multchannel View that also use ffmpeg and getting a real kick out of the possibilities. I was thinking that if Channels App Remote Plus could play into any of that, integrate with either or both, it would also be amazing! I'm imagining ultimately using one master dashboard to remote control it all, choosing which channels to play, on-the-fly, and in which position they should appear in the configurable grid, which audio track is playing, etc. along with all of the other direct control that Channels App Remote Plus provides.
Any enhancements you decide to add will be appreciated, happy to troubleshoot anything and give feedback on other ideas. I really appreciate Channels App Remote Plus as well was Channels App Remote Control and use them both, nearly every day now. Thank you!