This kind of "third space" is really a workplace that is not home and not a coffee shop. Alternative workspaces that draw people out of the homes and give them more and better access to workplace amenities can help people be more productive and create community.
The future of sustainablity museums structures may benefit from: asphalt that re-sets itself with a dose of induction heating, concrete that patches up crack with the help of its living bacterial aggregate, and a recent discovery that some metals have self-healing properties.