I think my ideas are more along the thinking of the poster Gemy. I think the standard is fine. Except, I do not think docked tails should still be required. Natural tails should be permitted.
I don't have a problem with creating new Yorkie groups and standards. AKC does this for Cocker Spaniels, and some other breeds. Example we could have a new group called Chocolate Yorkies. Their standard might require a weight of 5 to 9 pounds, pendant not prick ears and a brown nose. Parti Colored Yorkies standards might require white legs and a natural tail and weight under 16 pounds.
Parent Clubs create the standard. The standard is the ideal of a certain pure bred dog. Very few dogs meet their breed standard in every area. Their gait may be a little off, have the wrong top line or ear size or placement, too high to low, too big, too small. Deviation from the ideal is considered a fault. A fault does not make them stop being a pure bred dog. A serious fault may keep them from competing in bench shows.
Real changes in my opinion need to be made by parent clubs. One way to cut out bad breeders would be requirements about health. Example: to register an AKC litter, parents (both) must be DNA tested pure bred and certified free from diseases listed by the parent club. With Yorkies it would most likely include, Liver Shunt, LP (sliping knee caps) and Blue Born mutation gene. Sadly Dog breeding is always done to better the breed. It is more about cuteness than health.
I have five Yorkies ( three come from show parents and well known AKC breeders) one was a rescue, and one Craigs List rehome. None are close enough to the standard to compete in conformation, bench show. Three are wonderful Therapy dogs. And Gracie my rescue, is the love of my heart !