I really like iOS 7 for the most part, but I can think of a few changes that would have me dancing in the street: 1) A redesign of most of the icons, with a toned-down color palette. 2) An improved dock. Much more translucent, or even tinted instead of blurred. 3) Subtle shadows here and there, especially behind the icons and their titles. What are the changes/surprises you most hope to see in the GM?