Expanding public transit is good but making living space affordable near public transit would help a lot. There are many people who would like to live in the dense city core but its to expensive. If everyone who wanted to could live close to the transit hub as possible in dense hi rises it would reduce things a lot. I myself live near the end of the transit lines as a compromise of price vs transit availability. I know folks who live farther out because its way cheaper. You can't get away from the fact that for most people housing is their highest cost. Basically if you go way out you can still find 1k a bedroom but if you go into the city center you will be at 2k a bedroom. If you lucky and can find a job way downstate in the rural areas and you could be talking 500 bucks a bedroom. Your screwed if you lose that job though.