My megaproject ideas are mostly pretty standard. I'd build a high speed rail network across North America, and build and expand metro and regional rail systems in and around every city. I'd turn all cities and suburbs into fifteen-minute cities. I'd decommodify housing, and build ten million units of public/social/non-market housing, mostly three bedroom units. I'd link those last three policies together by building TODs around the new Metro and rail stops. And I'd build bicycle networks in every town and city and connect them to the TODs. I'd build bridges and walkways across skyscrapers. I'd put a bidet in every American toilet (uses less water than toilet paper apart from being more comfortable). Fiber internet in every home. A heat pump in every home. An induction stove in every kitchen. Phase out fossil fuels and power everything with Pumped Storage Hydropower and Geothermal. I'd make the US go Metric.
But my truly crazy, obsessive idea would be to bring back the French Revolutionary calendar. Or I'd purge all French influences from English.
BAN MULTI LEVEL MARKETING SCHEMES. moon base. ban homeschooling and private schools. no churches over 1000 people allowed. orphanages are the equivalent of the best European style boarding schools one could ask for and any teen can go there. make spanking illegal and send any kid that wants to go to the fancy boarding school. a childrens bill of rights.
MLMs are already technically banned. It's hard to legally prove they are in fact MLMs.