Some interesting points.No matter how clever manufacturers and engineers are, you can't disguise weight on a big lump of metal hurtling along bendy roads. Physics says this is so. The weight will always make itself known in one form or another.
If a car is so clever that it can make you not notice the weight, it isn't going to be 'fun' to drive. Actually, no, it is physically impossible for a car to not show it's weight at one time or another.
Pretty sure Porsche engineers have proven this to not be the case with the 911 with its engine slung out the back. They've more or less defied physics for a while now. That most definitely is a sports car and hasn't been classed as lightweight for a very long time.

