Dan the Man sorts it out in the Modesto Bee:
“The potential fallout is immense,” he writes. “If pensions can be reduced in bankruptcy, California cities, struggling with ever-increasing demands for pension fund payments, will use it as leverage to demand concessions from their unions.”
More than that; knowing they can now lighten their largest millstone, more cities will opt for bankruptcy. And emerge fiscally stronger, thus better able to serve the public good. Detroit may have done them all a favor.