... that can o worms has been opened before :p and most seem to go along with the idea, usually referring to "genetics" as their point of contention. Others, especially those that are more interested in meat than "glory" .... well, they just ain't havin none of that "let 'em go to grow/produce more big'uns" ideology. :D
Personally, I don't see the genetics idea being as valid as it's presented.

I base that on the fact that Crappie are 'multiple partner' spawners .... they don't mate for life, and they don't mate with only one male. They will, given the opportunity, drop eggs in many different nests. I'm not sure just how picky they are, about their male partners, either

So, with that in mind, and even if they are "picky" about the male & his nest location (or looks) .... how is it that genetics are going to play the role of producing bigger fish, when the survival of the fry is maybe one in a hundred (to even get to be old enough to spawn, themselves)

Seems to me to be more of a numbers game, than a genetics one. The fish are spreading their eggs out thru numerous mates, with the "idea" that (hopefully) at least some of their offspring should survive.
Also, one has to recognize that (at least in this state) the fish are generally only going to live for 5-8yrs. That depends on so many different factors, that it's a small wonder that they survive at all. And, since "bigger" (or faster growing) doesn't necessarily equate to "smarter" .... how would genetics produce the results they claim ? Again, it seems more likely that the production of "numbers", over a broad field of male partners, is the survival tactic of choice.
The ability of a body of water, to produce & sustain a population of fish, seems to be the key to "size & numbers" ... not the genetics of the lucky few that grow large. I think they ALL have the capacity to grow to a large size, since their genetics are spread throughout each succeeding generation. We don't catch all of the big ones, either :D I'd venture to say that there's been more 3 & 4 pound Crappie die of old age ... than have ever been hooked/caught by us anglers.
It takes a KY Crappie about 3yrs to become mature enough to spawn. At 3yrs of age, they're generally what ?? .... 9-10" long. That's the minimum length of keeper size fish, in lakes with a length limit. With those thoughts in mind, and the idea that the KDFWR wants us to be able to catch quality & quantity (so we'll continue to purchase licences & support them) .... if genetics was the key factor, then why wouldn't they put a slot limit on Crappie

Say, something like .... keep your limit of 10-12" fish, and release the rest. That would suffice to keep the population going (enough little fish to grow into the keeper slot, & enough big ones to keep spawning more replacements) ... and still allow anglers to harvest good quality fish & fish of a edible size. And, besides all that .... consider this : A 3yr old Crappie can spawn, and they pass on their genetics to their offspring. They don't get "better" genetics as they age .... so they'd be passing on the same genetics, at age 8, as they are at age 3 !!! And seeing as how they pass these genetic traits on, thru multiple male partners, every year they spawn ... they aren't mating for genetic superiority, they're diluting the genetics down to a "average" level.
I could be way off base, here ... but, that's how it appears to me.
... cp
