text: To answer meself, I checked the area I know best which like here has been retagged as a sport-pitch shooting with a very restricted boundary.
  However, the Sperrgebiet, the restricted danger zone when in use, is much larger, and regularly affects the use of areas which would be oblivious to the danger from this mapping, requiring a larger detour than one may have planned.
  Therefore I advocate the use of the danger_area to reflect the on-the-ground (or through the air) reality, when strictly the area would not be considered by me to be military per se.
  The regularity of use is frequent enough (seemingly daily to weekly) here to merit it in my opinion.