I have seen some REALLY cute "over-sized" yorkies (here and elsewhere), and yes, sometimes they have their own strengths and positive features. It's always GREAT to see owners who love and appreciate them just as they are!
But I think that there are ENOUGH "large" yorkies out there, without irresponsibly breeding more. Rescues are full of yorkies that are gorgeous and healthy, but are given up just because they are "too big".
If you're going to breed, I definitely think that you should try to breed within the standard as closely as possible. There are ENOUGH poorly bred yorkies out there. "Full-blood" and "registered" mean next to nothing because of this.
I'll be the bad guy to go out on a limb and say that the dogs in these pics look like "terriers", sure...."yorkie mix", yeah maybe...but good examples of what a yorkies should look like? breeding material? no.
(and I don't even consider myself to be an "elitest" along these lines!~)
PS....having sd. all that....Raphie'sMom....Ralphie is a really cute guy!!! No, I probably wouldn't breed him, but...he is REALLY cute!