Join Date: Jan 2012
Location: Calgary, AB, Canada
With horses and dogs alike, a breed can only even be considered to be a real breed when it reproduces true to type. An F1 generation Poodle x Lab is not a breed. Why? Because the F2 and any following generation will be all over the place.
Same goes for your "Blazer" horses. The fact that you have two "purebreds" and one is so far from the breed standard on so many levels, shows that they do not breed to type. It is insanely hard and takes many generations to get a crossbreed of two breeds to breed true to type, let alone four. So there is no breed.
Pretty much all legitimate new breeds are created out of a specific need - I.e. An animal is needed for a specific job. Someone who wakes up one day and starts making papers for crossbreeds on a computer in not a registry...