License official German dictionary (Duden) for InDesign
I would like to see the official German dictionary integrated into InDesign. There's a full blown and powerful spellcheck solution already available, you just need to license it. http://www.epc.de/unsere-loesungen/duden-korrektor-fuer-adobe-indesign-und-incopy
But, there are many problems still alive.
Tobias Wantzen commented
InDesign CC2018 now has integrated support for Duden! Yeah!