Like Nick, I hope Porsche loosens its styling lines a bit.  But I trust Porsche will be very careful, as sharp styling lines can be disastrous, and lead to change for change sake over the years.    Sharp styling lines tend to look dated quickly, and can look too much like design for design sake.  Japanese designers fall into this trap, as does Cadillac, and BMW occasionally,   Style becomes the driving issue, not function, and the overall image of the brand becomes less "pure" and cheaper appearing.  I for one am somewhat worried about the sharper taillight appearance as thus far seen on the new 991 renderings.