"How about we abolish cities, people live in human scale communities where they want, and
we use the wonders of telecommunication and automation to avoid the need for millions of poor bastards having to live in crime ridden urban squalor, this apparently making up for the inability of society to use the technology already at its disposal?"
And you can have that all, provided you're prepared to carpet bomb every city in a country flat to implement it. that's the dirty little secret of most "utopias," they start with a destructive event on an epic scale.
In London I'd start with all those empty "investment" flats bought off the plan by foreigners as bolt holes in case their mate, "El Presidente," The Great-And-Glorius-Leader or WTF the chief crook is called has to make a run for it.
Utopias are a bigger fantasy than a dystopia. IRL life if you want that lifestyle you can have it now, if you're prepared to make the sacrifices and compromises necessary to do so, as Lester Haines did.