German shepherd dog dewlap:

There is plenty of concentration focused on the German shepherd dog’s physical characteristics that address the obvious structural issues. 

I see a trend in our breed that has not been approached.  The loose skin under the chin and on the front of the neck is certainly not acceptable.  Regardless, it remains and unfortunately is not commented upon.

There are some breeds of dog that have very loose skin around the front of the neck. 

I feel strongly that the GSD should have tight skin encapsulating the neck, male or female.  This is independent from the male “mane” that develops later towards his adult life.

I also concur that singling phenotypical traits is not part of a productive breeding program.  However, mindful consideration of the dewlap trait should eliminate it as an aberration in a decade if delicately addressed.