The visibility front & rear is improved, making driving a Prius more comfortable. I do not miss the rear window wiper at all. I seldom used it on my 2 previous Priuses.
The rear hatch is light & easier to shut. The cruise control is absolutely stellar- the best I've ever had.
I am not happy that Toyota moved the USB port outside of the console, so my IPod Touch's white wire is very visible to prying eyes.
I am not happy with the reduction of glove boxes (1 as opposed to 2). I have rearranged my stuff & everything fits in them EXCEPT the owner's manual packet, which now resides in my house- not a good place if I am on the road and need it.
The grille is the ugliest of all Priuses- it looks like an angry alien insect...