Of course there is no way every foal is going to be a grand champion. If it was that easy we would all have a pasture full of them.
The thing is though if I do produce a foal on the lesser end of my goal then I DO NOT REPEAT THAT CROSS.
I think there is a semantics issue here too. Better the breed is not the same as change the entire breed.
I breed small equine (miniature horses, shetland ponies and mini/shetland crosses) My goal was to get better necks and heads along with a nice big hip as I feel those are some of the biggest issues with small equine. I do feel that we are slowly accomplishing that goal. Its not something that happens overnight and takes years of hard work. I feel that last year was the best foals we have ever produced and hoping this year is even better.
Over the years I have taken a lot of heat form stricly mini breeders for doing the shetland/miniature cross. But I am doing what I think is best and it doesnt matter to me if I hear the grumblings.
Here are a some of what we have produced
Baxters Just Teasin Ya Miniature horse/Shetland pony
Baxters Silver Sensation Miniature Horse/Shetland Pony
Baxters Black Intimidator Shetland pony