I still hold to that form does not follow function, and function does not follow form. I see them running parallel and working together to make a complete bird.
I hear and read a dogmatic adherence to the Standard as a complete guide to breeding productive birds. Though it is the best work I know for our purpose, I never got the impression that it was meant to explain how to breed productive birds.
With some of the Standard bred birds that I have kept, they fell short on a variety of points that added up to a less than productive birds. Usually the lay rate is not that bad. I do not think we expect 6 egg per week commercial performance. 5 would be nice, but four would not be the end of the world.
An appropriate POL is subjective. Most would agree that an April hatched bird that did not come into lay before the days were too short would be considered unproductive. You could be feeding that bird up to 16 wks longer to get eggs from her. If that is agreed, 32 wks is much too late. 28 wks is pushing it. An early April hatch will have pullets laying by October if POL is @ 24wks. That same batch hatched in March would be in full lay and the egg size up before the earliest hens molt
POL is not in the Standard or should it be. That is up to the breeder, and would have been a given 75 years ago.
Egg size is a problem in many. A 7 1/2 lb hen should not be laying medium large eggs. That is just a matter of selecting the largest eggs, raising the bar periodically. An appropriate size of egg for the size of hen is relevant. If I wanted medium sized eggs, I would rather feed a medium sized breed.
Early molters that take a long time to molt is killing time. She quit before her time, and eggs are lost. It isn't as if she quit eating. These hens are easy to identify and mark. The hen that waits for spring to warm up before she comes into lay is wasting time, but she is eating feed. Often these tendencies go together. A month on each side of winter might be 32 eggs. It could be the difference between a 140 egg per year layer, and a 160 egg per year layer. Perhaps more when these same birds are often not reasonable winter layers, and take summer breaks.
For the majority of the Standard bred birds that I have kept, if these three points were improved, the birds would be much improved. Their type and capacity was great, overall. It is the things that a judge cannot see where they fell short.
Cockerels that require too much time (and feed) to be useful. Many are not worth plucking at 16 wks., and are all feather. They look like something until we pick them up. Some should not be. It is only an illustration. Some cannot be useful at a young age when so much protein and energy is devoted to feather rather than flesh. They often dress out fine as adults. LOL. Excessive feathering is a challenge for some.
I do not expect remarkable carcasses at young ages, just useful ones. They are fryers at these ages. They are not as attractive, but they are tender. I never saw where plucked dead birds were attractive anyways. I prefer them battered and fried or grilled. We will slow roast a few roasters, but otherwise I will save the big money for steak and lobster. LOL.
All of these points are easy for an amateur like myself to identify and measure. My opinion is these are some of the most overlooked points and can be the difference between a productive bird and an unproductive bird. You cannot see it looking at the bird. All of the capacity in the world will not correct it. It is just a matter of watching and marking birds. Keeping a few more than we need, so we can afford to rid ourselves of the poorest performers. Breeding birds that have been evaluated. The best judges will not see it in the hand. The mentors will not teach it. The Standard will not tell us to. We have to know them ourselves. If it matters to us, we will. If it does not, we will not. If the eggs and meat was our livelihood we would. It isn't, so often we do not.
For getting birds that look like their breed, breeding to the SOP has to happen. But we all know you don't have to breed to the SOP to have productive birds. And if simply reading the SOP means that you know all there is about breeding productive birds - then apparently I missed that part because I haven't seen where the SOP tells how to breed specific traits. It tells me what my breed is supposed to look like and leaves a lot of things up to me. We don't all have mentors to show us how to breed the old fashioned way, so if the APA wants more breeders with productive birds, perhaps they need to add resources or links to resources for folks to get the info they need on how to breed for production with more specific details. Sometimes it's like the SOP shows us the destination and part of how to get there, but doesn't give us enough step by step direction. And for folks who don't know where to find those directions...they're out of luck.