So I have pondered on this today while feeding the farm animals.
Some may not care about letting their lines go with them. Yet there are people ready to take up the challenge in an honest way. Lines are lines because everyone has a different eye/vison. So while somebody will do their best to keep them going, their will be changes over time. So maybe some time should be spent on finding a good steward instead of letting them go. I'm not advocating to letting the genetics go to anyone who comes along, but letting the old breeds/lines die just seems wasteful.
I do believe I understand where you're coming from. Just not sure what your idea of good fowl is. I saw some pics of a New Hampshire cock that won best American at the Bluebonnet classic in Texas. I would not want that bird in my breeding pen. And I'll leave it at that.
The Private apa group seems pretty good to me though. Some big name breeders with some nice looking fowl are pretty active there.
There is a very large problem today when it comes to Hatchers and Colors vs actual breeders of fowl. But not everyone coming up in this culture is falling into this trap. When the older folks with the know how go hide away, it only leaves so many paths for people to go. Some choose the hard path, most go the easy route. Would be nice to reverse that, but it's not gonna help without educating, explaining, and showing the masses why the hard route is better.
Found a pic of that cock.