The problem with Germany today is not that its too strong. Its that its too weak. Without the Germans and their science, technology, industrial capacity (this is withering away), the Europeans will never have a military force that is capable of anything. Nobody else even has the potential to be strong enough.
If you want dependents who will be a net drain on America then by all means wish for a weak Germany. If you want the Europeans to be the strong ally of freedom they should be and could be, forget it then.