Not a savior, but a jump from .450 to .700 or .750 is as good as a jump from .750 to 1.000.
We have other areas that can be improved upon, too, but Cordero looks like the easiest one to fix, in system.
It's no sure bet Santana does better, and we'll never know if Cordero was about to get red hot, but demoting him, but at this point, it's worth a shot.