No need to start over from scratch but frankly, Android/Jelly Bean has finally surpassed iOS in form and function. Apple needs to include a more significant refresh than it has been accustomed to. Adding a few minor features and some useless apps like passbook isn't going to cut it anymore. Apple still has the best hardware and "ecosystem" but the boring grid of static icons is starting to look downright primitive.
I really don't understand how much time people spend on their home screens. Is it typical use to stare at icons and wish they'd move when someone has run out of other things to do?