Just to be clear, I'm an Amy supporter!
I see what Amy's trying to do with the Muppet models. She's creating full-bodied characters in a variety of perspectives and that requires filling in a lot of gaps! Peter's Miss Piggy is excellent in every way, but I doubt it would pass Disney's revisionist look of her. That's part of his point.
However, as spectacular as his Miss Piggy is, his Gonzo is four-fingered and quite structurally incorrect. (I'm as picky on the weirdo as he is on the pig.) I'm sure he could give him the star treatment if he wanted to, but Amy has trumped him with Gonzo and the most of the other character designs. His Janice is perfection.
Amy's art of Pepe greatly improved between issues. He's tough to nail, especially without a wealth of resources. The prawn is not graphic friendly.
I have every confidence in Amy's direction. I would like to see a sprinkle more squash and stretch elasticity in the forms, but that's a personal choice. Much of what she draws blows my socks off. In other words...Amy owes me many pairs of socks. Argyle is fine.