Can we do this? Sure why not…
We have to face it, the current way we plan and build cities are not conductive towards pollution, mental health, efficiency (including energy consumption) nor even productivity. So can Spatial Planning both find and enable new ways in building cities, sub regions and communities.
I say Spatial Planning can given it would be resorting back to old techniques that were common pre 1950s when the car and motorway took off.
Below is an example of what Spatial Planning could very well enable:


More can be found HERE. In any case this should be seen widely across all Mixed Housing Suburban, Urban, and Terraced Housing/Apartment Zones here in Auckland.
The assumption is your neighbour is friendly and the place is clean.
However you may see antisocial, drugs, mentally ill sometimes violent people. Your neighbour plays loud heavy metal music and having party all nights.
Kids on the street trying to steal your bikes. Wall full of graffiti and the common area full of rubbish.
The building is needs maintenance but your neighbour doesn’t want to pay for it.
This sounds like worse case scenario.
Actually this is what happening in statehouse complex, and parts of the city centre.
Utopia of communism vs the personal ownership of land, house and cars
“would you live in a large family friendly cooperative, next to a park, with a variety of housing units (studios to 6-BR cluster apartments), with a car-free middle, playgrounds, massive balconies, and ample bike parking”
I would. It’s a shame that councils never allow developments with apartments and car free streets.