Yeah I have no idea if or how it could work. Commie blocks used to design local neighborhoods with shops and kindergarden. Maybe it would be that when you have kids your move to a block with a kindergarden and school, then it would make more sense.

Maybe it would be harder to farm but maybe it could also be solved through lighter robotic farm equipment. I once calculated that you only need ~250m² for potatoes to produce enough calories so feeding yourself so it's theoretically not that difficult. I also hope in the decades to come we can genetically engineer better food plants. Like higher / better quality protein crops.

But my main idea was how to create a view for people that want to "live in nature". But the hippie ideal for a farmstead is unsustainable with so many people. An apartment block would save a lot on heating, cooling and infrastructure. The proper sci-fi utopia would then be to have underground railway tunnels connect thousands of such apartment blocks in nature. Then much surface area could be rewilded instead of having roads and bridges. But tunnels are rather expensive.