I never got that aspect of designer breeds.
How can you (not you specifically of couse) guarantee the product of two different breeds will have specific characteristics of one or the other. Goldendoodles (stupid name) are supposed to have the temperament of a Golden and the hypo allergenic coat of a poodle, but how do you know it won't have the temperament of the poodle and coat of the Golden? Its just a mutt.
You can't. There are no guarantees with these "designer hybrids". They can just as easily have the least desirable traits of each of the breeds as the most desirable traits.
Apparently there are some people who are actually trying to turn the "Goldendoodle" into an actual breed. They track the puppies that result from each breeding, and hope to end up with a breed that has recognizable characteristics that can be expected each time two "Goldendoodles" are bred. They do all the genetic testing for any disorders that each breed are prone to, and they only chose the best specimens of each to breed. If you're going to try to make a new breed, that's the way to do it. The people I've seen who are involved in that are honest about the fact that right now, it
isn't a real breed and you can't know what to expect when you cross a Golden and a Poodle.
Frankly I suspect that they'll never be a real breed. I still remember when Cockapoos were hugely popular 20 or 30 years ago. Everyone swore they were the next big thing; people were horribly offended when someone dared to call their dogs "mutts", even though that's what they were. They
still aren't an accepted breed. I don't believe any of these poodle crosses will ever be accepted as actual breeds. They definitely won't be until you can reliably show that there is a "breed standard" for the puppies that result when two Goldendoodles (or Cockapoos or Maltipoos or whatever) breed.
Most "designer hybrids" are just crosses between two random dogs. The breeders are just out to make money. They are absolutely no better than the mutts you'd find in a shelter, and by buying them from a pet store all people are doing is showing that there is a demand for pet store mutts and ensuring that the puppy mills will continue to crank more out.
I love shelter mutts and hate that people are still buying dogs in pet stores. I also think it's silly that so many people get sucked in to the designer hybrid craze. I really don't like the idea of Goldendoodles, but at least some people are actually approaching it the right way since they seem determined to try to create a new breed.