At this stage I think your take is too optimistic. I think even mentioning the 1953 debt conference will trigger the "we are called Nazis" reaction from a large enough part of the media and the Grand Coalition to define public opinion. To give you an example where no nationalism and counter-nationalism can be involved, remember the reaction Gysi got when he compared the treatment of Greece to Versailles. I'm not entirely convinced that it's a good idea, either, but the Greek government can't fight for the objective reporting of its positions against a hostile media of a much larger country, whereas a formal suit could at least trigger serious discussion in other countries (to embolden them to isolate Merkel & Schäuble).

_{*Lunatic*, n.
One whose delusions are out of fashion.}