I have to disagree with you on that. Selective breeding is a gamble, not a gurantee. And nor does it increase the chances significantly. For instance: just because you buy 1.1 pied (high-white) then you're not guranteed to get offspring that has 85 - 95% white on their body. It is a gamble and just because the parents are nice then that doesn't mean that the offspring is going to look even better than them. It varies through generations. One day you're lucky and vice versa.
I've got a few grown-up G-stripes - females of course. One of them has some partial breaks here and there on her stripe, and yet her parents had complete fading stripes. I don't care about that as long as the genes are what they're supossed to be, and that the animal in question is healthy and works fine.
You can try and stirve for perfection but it is so unlikey that one may have the champion of for instance pastels. Some like blush while some like clean. Some like reduced while other like busy. Some like bright while some like dark. As long as the owner is satisfied then he/she shouldn't care about people opinions.
Would you rather pick the handsome looking but poor feeding VPI axanthic or the average looking but terrific feeder VPI axanthic? Health and genes come before looks in my world.