It floors me that they haven't addressed the underlying architecture issues that made Issues unusable: Issues are only for a single repo. Business users don't (and shouldn't) know what repo to add an Issue to. This is why we moved away from Issues and none of these new visualizations make the product usable until they deliver multi-repo issues.
GitHub issues should not be used by non-technical contributors though (imo)
You can learn so much about what the user experience is from just having them tell you what's wrong. It's a real bummer though: most of the people responding are about as far removed from UX researchers as you get: almost no ability to put themselves in the shoes of others.