In my own personal view, a breeder that says they are breeding to the Standard and advertising them as such, a potential buyer for that breeders birds/eggs/meat have the right ask about egg laying, from point of lay right through number of eggs in pullet year and first hen year. The buyer should have the right to get straight answers as to the size and quality of those eggs as well. Breeding to the Standard must mean a transparency about this matters.
What do the cockerels weigh at 5 months or 6 months? What do the carcasses look like? If those time frames are appropriate to the breed, then if one claims to be breeding to the Standard then productive qualities such as these should be made known.
Just my own personal view, but since my primary focus is agriculture, which is assumed in this thread's title, then I believe these are honest considerations for the APA to address and for Standard bred breeders to take seriously.
"Perserving" breeds only has meaning to me if vigilant and faithful breeding actually produces birds that meet the Standard and that must include breed appropriate production capability as well as being a handsome, artfully beautiful specimen.
Just my personal view.