Oh my god, what a difference it made. Thanks for sharing this. I do wish this could have just been a feature tacked on the Sponsor Block extension, especially considering it has features which rely on that data, but otherwise it's perfect.

For those that haven't watched the demo video: for videos that don't have community thumbnails or titles it has options allowing it to automatically pick a random (non-sponsor segment) screenshot and automatically clean up the title (remove emoji, fix capitalization).