My 2 cents on pedigrees. Pedigrees in chickens is great in theory...especially when there is still so much confusion shrouding our beloved Ameraucanas. However.......
When you only breed from certain "pedigreed stock" it is inevitable you will have a genetic bottle neck down the road. You can witness the most classic case of this in pedigreed dogs and all the problems that have risen with having limited strains/stock to breed from. There have been numerous studies done on this. You will also need to do DNA testing with your flock and the sales thereof and I can not imagine how time consuming and costly this would be, because unlike dogs that can have 1 to 2 litters a year, or horses that can only foal once a year, you can literally hatch 100's to 1,000's of chicks a year from just a handful of birds. Another question that could be brought up is, who's flock or flocks would the pedigrees start from? Would that make your flock and mine obsolete and would we need to start over? (In the case of the pedigreed dogs, a century ago, they took the breeds of the social elite to start their registrar.)
While I am an Ameraucana enthusiast, and loathe the idea of EE's being shown and sold as Ameraucanas, we need to take into account that incorporating new colors (let's choose Lavender or Chocolate/Dun as examples because they are being worked on and favored) have to come from alternate breeds, such as Orpingtons, and be bred back responsibly to work back to Ameraucana type. If someone else wants to start a new color, what would be the protocol from which the new color can be used from? What if the chicken is an English variety and not pedigreed here in the US? It leaves no room for creativity and expanding the Ameraucana varieties, IMO. The original Ameraucana breeders, and writers of the Ameraucana SOP, used Ameraucana chickens that were bred to various brown egg layers to gain the feather colors the club was going for. And I've seen time and again it mentioned how many of these originators are not "purists" when it comes to the breed, so why should we be?
I do, however, agree that a paper trail of sorts should be maintained if you are serious about breeding. For example, I have a record of my pairings, test matings, hatch dates and percentage success rates, resulting chick growth/color/problems, etc., etc., etc.