I do wonder, if we just had 10Y mortgages, would home prices just crash? People won't buy what they can't afford (I mean, sure, they do to some extent, but not if their monthly payment would double), so sellers might just be forced to sell for less. The first "generation" of 10Y-only mortgages would be disastrous for current owners, as their existing 30Y mortgages would be underwater. Or maybe people just would stop moving...
I just glanced at the article you linked, and realized I'd read it back when it was posted, and agreed with its conclusions. I just don't know what the solution is.