Really nice work for "Süddeutsche Magazin"!
Though I cannot give any hints to the question itself let me suggest the following improvements:
- Use of UTF-8 text for metadata (e.g. title) by prepending text with 'u' (and use Umlauts in the text istelf of course)
- Set correct metadata for language by using something like conversion_options = {'language' : language}
- Set publisher in metadata, e.g. like publisher = u'Magazin Verlagsgesellschaft / Süddeutsche Zeitung mbH / 81677 München'
+Karma!