RE: Rocking/wobbling/shaking when ICE turns off?
Yes, and not to state the obvious, but once you get into charge sustain mode (i.e. less than 26 miles of battery range), the engine works much harder/louder than it did north of 26 mile battery range. In fact, since the last weekend was the first time I had the battery above 26 miles and went into Sport mode, its understandable when the reviewers say you can barely hear the ICE in Sport - in charge deplete mode, the ICE revs so low that it is barely audible. But pop into Sport mode with 15 miles battery range and accelerate onto a freeway onramp and you'll definitley notice it - not an unpleasant sound, but certainly noticeable.
So perhaps those of you that haven't noticed the wobble, haven't really used Sport in charge-sustain mode where the engine works harder to generate the electrons to power the car.