There are a few really strong GSDs out there, but they are extremely hard to find and I would still argue that the original genetics that created the breed are lost. If you look at some of the photos in The German Shepherd Dog in Word and Pictures, by v. Stephanitz, you will see the dogs doing things that no modern GSD is capable of. One photo shows a GSD scrambling up a straight tree to a height of 13 feet. Von Stephanitz writes about testing a dog by charging the dog on horseback and the dog charges back toward him and jumps up and bites the horse on the neck so hard he had to beat the dog off with his riding crop.
While the protection sports at least try to select for working ability, I would argue that schH has resulting in selecting for some of the wrong genetics. All that is really needed is very high prey drive and big grips. There is no evaluation of environmental insecurites. The gun shot was taken out of the BH, so now a gunshy dog can pass. The sport is primarily an obedience sport, so dominance is selected away from. The bite scenarios are so totally predictable that the dog needs very little courage. The sport is more about the trainer than the dog. The SV is about money, not the breed. That is why the highline dogs generally are an embarassment to watch in the bitework. The helpers are coached on how to go easy on the dogs in the Seiger show. IMO, they are not nearly the working dogs thet were originally bred to be. Not to mention the health problems.