After Bioshock Infinite came out, I imagined how cool it would be to have a shogunate-era Japanese version of it called "Floating World Edo", rendered in the style of ukiyo-e prints (which term means "pictures of the floating world"). Perhaps an alternate-universe Tokugawa family would use their floating capital to keep their daimyō in line, not by forcing them to live in Edo for half the year, but by bringing Edo directly to them. Yes, I know that's basically Laputa. (Fun fact: The bits in Gulliver's Travels concerning Laputa and Balnibarbi contain descriptions of not just an LLM, but a fairly typical organizational "AI transformation" replete with a skeptical holdout at risk of being punished by upper management for not embracing the new hotness!)

Require all the cyberpunk billionaires to live together under the shadow of the surveillance shogunate.