First thing I will do when I get iOS7 is use a darker background... and hide most of the brightly-colored Apple apps that I don't use.
Other app icons look better... I'm not a fan of Easter Egg colors...
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My home page right now is 50% folders. The only Apps I don't keep in a folder are Messages, Google Maps, Shazam, Voice Memos, Safari, Calendar, Soundcloud, Settings, Mail, and Camera. With iOS7 I'll probably throw Settings in my Utility folder since I'll have the toggles.