AH HA!!
Here is kind of something I am considering how it could be useful...and maybe this isn't possible. A spreadsheet...where different fields could be used to sort. (o.k. actually a database, but that isn't something most people have).
For example...I'm really happy with my flock but decide I would like to move toward eggs that are A1 on the egg color chart-- while I'm getting C15. Makes me think when it is time for a new rooster...I go to the table, sort by egg color...find the egg color codes, and lo and behold. Mr GaryDean26 has some stock with A1---so I try to get some hatching eggs or purchase a cockerel from his flock.
Or---from looking at pictures, I see that Ms Blackbirds13 has a color I really like (were all these people to put entries in this as yet imaginary place) - so I contact her for some hatching eggs.
And someone notices that my guy has a great comb--so they contact me for some spare cockerels.
Hmmmm I wonder. Kind of far fetched....but it is kind of the way I think I would work to improve my flock anyhow.
Every individual would enter their own flock data, of course. Wonder how long before it would break. (Before I retired, long, long, long ago, I used to work in the field of Information Technology..... So I know the underlying concepts.)
Too bad there isn't a person with a lot of technical expertise that is current...that would/could make it happen and say it is just a piece of cake to do.