Excellent article. If cities can become funner, greener, healthier places - they'll become more attractive to live.

I'd like to add one more idea to yours. It's one that Barcelona is planning to implement. https://www.theguardian.com/cities/2016/may/17/superblocks-rescue-barcelona-spain-plan-give-streets-back-residents

"Currently faced with excessive pollution and noise levels, the city has come up with a new mobility plan to reduce traffic by 21%. And it comes with something extra: freeing up nearly 60% of streets currently used by cars to turn them into so-called “citizen spaces”. The plan is based around the idea of superilles (superblocks) – mini neighbourhoods around which traffic will flow, and in which spaces will be repurposed to “fill our city with life”, as its tagline says."

The car and roadways dominate and partition cities, with noise, pollution and dangerous fast-moving traffic. If you can take back part of that space for parks and people - we can live in outdoor communities and increase the quality and frequency of our social interactions.