I've always been curious about the concept of a "designer hatchery". One that moves away from mass producing low-quality specimens in concrete raceways and tries to produce fewer, but higher-quality broodstock specimens in a more "natural" environment. Do away with concrete raceways and create some sort of miniature stream environment with dynamic flow/structure, some amount of natural food sources supplemented by artificial feed...something that produces smolts that are better suited to what really exists in nature while still maintaining some of the advantages of "controlling" the reproduction process. Not sure if anything like this exists in the anadromous fish world or not. It's pretty utopian and maybe the costs would be so astronomical that it just couldn't be done.