my initial thoughts relate to indirect benefits, such as, the provisions of affordable housing can help newcomers achieve economic stability.
when i say newcomers, i am leaning more towards international migrants.
On the migrant line of new comers I go with the old fashioned China Town idea. If you have a neighborhood of similar mind migrants then they support each other plus the city gets some culture. A lot of the old migrant communities had affordable housing, community centers for advice and services, and of course local restaurants, markets, etc.