I didn´t read all of it now but know in general of these programs. There are two problems: The genetical base shoul be wide, you should have enough possibilities of selection (the organisations can get new dogs from outside in Labs and GSDs) and it is extremely difficult on international bases. I don´t see that a
for exampel French breeder takes his dog out of breeding because the Slovakian Club thinks he should do so.
That this programmes work is out of doubt. On HD you get also much better improvements with offspring-control programms but they are also seen as only possible with wide genetic basics.
The Hovavarts in Germany used the offspring controle very succesfully on HD but they got massiv charakter problems and other health problems through this selection (though they will tell you this isn´t true
).
That is the reason why everybody waites on DNA tests.
Ina