Hi! Someone sent me this post as it closely resembles what we are building at https://mattermore.io - except that we believe coordinated action to tackle the grand challenges of our time cannot be facilitated within the app. Still, many of the premises of this post + the comment section are very valid.
I'd love to have a chat with you, if you're interested in exchanging ideas!
Here's a short little manifesto we wrote about our work: https://www.notion.so/mattermore/Solving-real-world-problems-A-manifesto-d54473855d014a6d8bfe3676932dcaa5