Icant agree more with what elegy said -
there are VERY FEW true working dogs left in the US that can use the excuse that they "work" so they have proven themselves. If they do, congrats - but I will still want to see the rest of the picture (proper health testing, proper structure, and a solid temperament correct for the breed).
other than that, its excuses - Saying a dog COULD do this and COULD do that is like saying well, shes CUTE and shes a good pet, and my vet says shes healthy because they examine her every year and shes up to date on her vaccines - that isn't health testing, that isn't testing the temperament, and that isn't proof of proper structure.
Titles are important because they provide us with proof the dog is what it should be. It's not just something simple someone does - these titles require training, they require an investment from the owner, and yes, they require money.
If you think your dog is structurally correct, get out there and prove it. Get independent evaluations of the dogs conformation.
If you think your dog has a solid temperament, get out there and prove it. And no, I don't think a CGC is proof that your dog is breed worthy - many breeds have breed-specific temperament tests. There is the ATTS, there are other exams including therapy dog tests that show what your dog is made up.
If you think your dog is a working dog, then get out there and show me. I can tell everyone that my dog walks nicely on leash, sits when I tell him to, and hangs out nicely around the house. But he is a working breed and should have a working temperament. Saying my dog "COULD" do it if he tried - well, it's excuses. If they COULD - then DO it.
If you can't afford these things, then you can't afford breeding, IMNSHO.
If y ou are breeding to better a breed - how do you know you are bettering it if you don't find out?
I own a working breed. A dog with a working temperament, structure that should enable them to work, and should have enough drive and such to get him to wherever he wants to go. I can say my dog could do this, that and the other - but the fact is, until you DO it, you just don't know. There are enough wonderful pets in shelters and rescues across the nation - we don't need more pets.
If you are going to breed, do it to make your breed better. Do it to improve structure, temperament, health and working ability. I see no excuse that I would accept for why a dog doesn't have all these things in the respective breeds, except that the owner doesn't feel like it or the dog cannot cut it. And both of those, to me - mean you shouldn't be breeding.