Is unlikely, for one reason:
[Benedict's] continued presence in the Vatican is necessary, otherwise he might be defenseless. He wouldn't have his immunity, his prerogatives, his security, if he is anywhere else...
(If he lived anywhere else) then we might have those crazies who are filing lawsuits, or some magistrate might arrest him like other (former) heads of state have been for alleged acts while he was head of stateBy 'those crazies' I guess he means those people who prosecuted guys like General Pinochet. Isn't it funny that, yet again, those who have the most to lose from the exercise of universal jurisdiction are its fiercest opponents?
And so goes any possibility, barring a mostly symbolic in absentia universal jurisdiction trial, of seeing some sort of child-rape command responsibility being exercised by national courts.