Will Canada's Housing Boom Go Bust?

The Governor of the Bank of Canada, Stephen Poloz, discussed the unsustainable housing price increases in Vancouver and Toronto during his financial systems review. He highlighted the risks posed by high mortgage levels relative to buyers' incomes and suggested that past government interventions have helped stabilize the market. Poloz hinted at the need for further government action to address these issues.

What hint did Stephen Poloz make regarding government initiatives in the housing market?

What changes on the mortgage side does Poloz suggest could help the housing market?