The fact that this car is so hotly debated in most forums suggests that it's controversial. There are many people who love it and hate it. It's fast, fun to drive, and comfortable. And is very innovative in creature comforts, build quality, engineering, and performance. Some might complain that the car is too heavy or has a bad transmission, my advice is if you don't like it don't buy it. For those who do love this car, shop around... and if you buy one it'll deliver a great (but possibly the ultimate) driving experience time and time again and will turns heads wherever you go.
Technology, power, engine sounds, solid-attractive-roomy cabin perfect for 2. Also braking, handling, and transmission.
Trim a bit more weight from the car... maybe bring to 3700 pounds from the factory. Faster CPU in iDrive module, fewer transmission settings (possibly 5: Aggressive Auto, Soft Auto, Aggressive Manual, Soft Manual, Extreme).