Overall, I don't know. In the past few months I've been able to watch some really incredible work being done by GSD's in multiple venues (in person - not online or on TV). Like WateryTart said, I'm certainly not qualified to judge the entire breed.
Regarding Stonevintage's comment, it seems that there are *some* breeders out there that are truly seeking to create exceptional shepherds. Perhaps it is their life's work. Perhaps not.
My personal opinion is best summed up by something I read at a dog event a few years ago. "Rescues save the life of a dog. Breeders preserve a breed. Responsible owners preserve our right to own all dogs."
Since I do not breed dogs, but this (^ above, in bold) is my firm belief, the best thing that I can do is support non-profit organizations and breeders whose vision seems to align with the betterment of the dogs. Vote with your wallet, as it is. All the while, being the best owner I can be for my own dogs, so they can be good examples. Just my $0.02.