Oh, of course. Outcrossing should only be done with very clear goals, and should always be considered carefully. Its not something to be done unless you really know what you're doing.
That being said - these sort of threads drive me nuts. There is no such thing as a "True" ameracauna, or aracauna, or any other breed. Where you got your birds doesn't matter, who you bought them from doesn't matter, and what their genetic heritage is doesn't matter.
Every one of these threads devolves into "if you bought it from a hatchery...", or "if you bought it from a feedstore...." , etc, and that's absolute nonsense. It doesn't matter if you found the bird for $.99 down at Tractor Supply in the Cornish Cross bin, if the color is right, and the comb is right and the legs are right, its an ameracauna. And it doesn't matter if you spent $100 a chick from a fancy breeder who has pedigrees of all his birds back to the original group, if its not an approved color, its an easter egger.
I have seen people with gorgeous Brown Red ameracaunas selling chicks for $2 a piece as easter eggers because their birds had hatchery origins, and I've seen people selling birds that don't even come close to any of the accepted colors for $30 a chick because they originally got the birds from rarebreeds or somewhere like that, but they didn't do anything to keep selecting for proper color. All of the nonsense about origins and "true" birds and all that does nothing but harm the breeds.
If people are going to keep and sell birds, they should know how birds are classified, and how they are judged.