So far, I have not seen anything good come from the judges offering their advice. They have only confused matters for the perfomers.
As in Corina Brouder, she was asked to step out of her "so-called" style box...something they should NOT suggest the performers do. It also backfired on the dog act. It's confusing and detrimental to someone who feels they need to take that advice but already has their own style down.
I think much of the 'bad' advice comes from Piers. He interferes with the purity of the performers' originality by doing so.
I really feel for the dog act. Piers was not fair to this guy who goes about rescuing dogs and trains them. He acted as if this guy was committing animal cruelty. Piers, you are cute, but the real cruelty was in your insinuations toward someone who took your advice and lost out. At least his heart was in the right place.