As to your claim that true American Appaloosa breeding stock is plentiful with an adequate gene pool, this....

"During the Depression years, interest in the breed revived and the few surviving horses were used to create the foundation of the breed. The Appaloosa Horse club was created in 1938. Since then, the Appaloosa Horse has become the third largest breed registry in the world."

Meet the Appaloosa,By Katherine Blocksdorf,Horses Expert

So now tell me how you went from a few surviving horses to the third largest breed registry without inbreeding. And then tell me why you are so adamantly opposed to adding genes from this newly found Krygyz stock instead of arabians and quarter horses.