Even as industry observers agree that the White House’s announced attempt to improve refinance efficiency through an expansion of the Home Affordable Refinance Program is worthwhile, there remain too many unknowns at the moment to judge how effective a HARP makeover will be. As part of his much anticipated speech before a joint session of Congress last week, President Obama noted his administration’s intent to help homeowners. “To help responsible homeowners, we’re going to work with federal housing agencies to help more people refinance their mortgages at interest rates that are now near 4 percent,” said Obama. “That’s a step that can...