There are already organizations and breeders out there selecting for a breeds intended performance (field trials, word of mouth, hunting organizations, etc), and they will maintain the adherence of the breed towards its intended function, which for most breeds -looks and affability as a pet are secondary.
>I don’t see their attention to a breed as an unalloyed positive. <
I see the damage done by the back-yard breeder, whose criteria for selection of a mate for Snookums is, “is he less than 2 blocks from my house” and “will his owner take a puppy in payment for his services” without the first thought about his genetic health; much less the fact that his bitch has been on thyroid for years, and phenobarb to keep those pesky seizures at bay. Oh, and no worries that the prospective doggy husband has just been let off quarantine for biting the next-door neigbor’s toddler.