New York City Mayor Bill de Blasio has been promising to “preserve or construct” nearly 200,000 units of affordable housing since his days as the most unlikely of mayoral contenders. Since stepping into City Hall, the mayor has repeated that pledge nearly every chance he gets. But while the affordable housing plan is one of his central policy issues, it’s still not clear how the city can hit the mayor’s magic number. That should change this week when de Blasio’s housing team releases their detailed plan of action. Before that plan is released, however, AN asked some of the city’s leading architects, advocates, and planners what they hope to see in the team’s path forward.