Hopefully this year, Washington will follow in Oregon's footsteps and re-legalize things like 4-plexes, or maybe go even further in big cities like Seattle.
Basically, "(re)legalize housing", along with things like corner stores and neighborhood commercial like corner stores and barber shops.
The merging of Seattle and Tacoma was inevitable. The same thing has happened to a lot of cities that are separate by <1hr commutes via highways.