A lot of the modern stuff is quite same-y but a lot comes down to safety and other similar legislation. It's the driving feel that has changed the most. Modern cars are so far removed when it comes to feedback. You can get a hatchback that will do 0-60 in less than 4.5 seconds and carry 4 people comfortably while returning decent miles per gallon.
What makes a great car is a car with flaws. Look at an elise, an mx5 or as above an atom. There are loads of things that make them not great cars every day (not so much the mx5 actually) but they are still one of the most rewarding to drive cars (in my eyes). I've got a fairly quick daily and while it's comfy, fast and practical it's nowhere near as grin inducing as my vx220 that just makes me grin from ear to ear every drive. In fact, need to take it for a blast soon as it's been too long.