Addressblock displays the contentpages title

If there is no addresstitle, the parents contentpage title will be displayed:
https://github.com/4teamwork/ftw.contentpage/blob/master/ftw/contentpage/browser/address.pt#L3
But now there is no chance to don't set an addresstitle. It could be a better way to suggest the parents title in the add form as default value for the addresstitle?