I think tin roofing or even terracotta would be a good first step, no asphalt shingles or poly composites. I can remember a time in the not so distant past when yards in the country where dirt ( sweep to be cleaned ) , no grass, no trees with in a certain distance from the house. I don't think the EPA would expect the run off from neighborhoods if everyone had dirt yards, and it sure ass hell would be ugly AF , but it wouldn't burn as easy. I also have concerns about municipal water sources being used as a fire suppression on every house, it would quickly deplete the municipal supply, however a self contained system would be awesome.
But in the end terrains and circumstances would be the best deciding factors for future building codes and disaster medition. We humans have been trying to expand our footprint for thousands of years for different reasons, food, power ect.ect. and we always run into problems and usually find a solution. Sometimes we get by with dumb luck and sometimes it bites in the ass hard.
My heart is broken for all the people in the wildfires..... hurricanes.... earthquakes.... tsunamis....floods..... starvation.
And I don't have any good answer for any of it, but I think the worst is yet to come, for instance the place I am at right now, has had a 100 year, a 500 year, and 1000 year flood all in the pass ten years.
Sorry for the drunk rambling. Peace Love and good night.