I would like to propose a “German” (speaking) ROS User Group. As entry into the rather complicated topic of ROS first time users might have some initial questions that might be easier to post in mother tongue. Furthermore there might be topics only of interest for German audience (e.g. issues with German regulations on travel costs)
Germany has always been in the Top 5 of ROS user locations (see metrics reports). German language is also being spoken in Austria, Switzerland (partly), and other regions (details here). German is a native language to almost 100 million people worldwide and the most widely spoken native language in the European Union.