"The new variety appears even to have been credited with all the merits of the old, and, as a natural consequence, connoisseurs, fanciers, ladies, and even gamekeepers went in for the fashionable and pretty silky Skyes.
So in this way the old breed, especially on the mainland, has been reduced to a parcel of mongrels. " 
That's is my fear with the yorkie. The repetitive breeding of off-standard dogs will move us further away from how we know the Yorkshire Terrier to be, and years down the line will result in mongrels with little to no resemblance to a yorkie.