The more immediate crisis will probably be due to other types of consumer debt. Take a look at auto lending and bundling as an example.
Not to mention the mountains of leveraged buybacks and leveraged buyouts. In my industry all the big players are bidding prices that can't possibly turn a profit for assets which they evidently hope to flip later. I think that kind of behavior is endemic at this point. So I think it's going to wind up being a corporate debt bubble.
From what I read this is predatory but in a different way - auto lenders want buyers to default, then they repossess the car while keeping the previous payments - basically like leasing out the car but higher profits.