that parallax look is kind of neat, but I can see how it or other zooms could make folks whose nervous and motion-sensory systems are really sensitive get a little funny. Heck, video games were giving kids epileptic seizures.
Not sure that a full iOS 5 or 6 "skin" is necessary, but you would think that all the animation could be turned off - Agrie with Hokiefyd, its a battery drain, and though the iPhone 5s seems to haves superiro battery life, still any extra drop is valuable...