What driving experiences do you hope to have beyond the 3, I mentioned above? Perhaps a weather mode? I don't think the 4 modes they currently have even address bad weather. Then again, maybe a weather protection is built in with traction control and a sensor tied to a temp gauge and or a rain sensor?
To be honest I really can't give you a proper answer as asked for without having actually driven such a different car and drivetrain and had time to feel/absorb it and the make some personal preference choices. Maybe it would be for just a wider range of alternatives which we just aren't aware of as possible and desirable... yet. Perhaps just a wider blend of attributes... based on conditions (How about Wet, Super dry, Extra cold, and Super hot... relative to temps and therefore pavement) and or driver preferred feedback feelings or lack of. I learned to drive many years ago with a mere "3 on the tree" shift. (sorry for dating myself) Some learned on 2 speed autos (yeah way back in the day), and we all thought those were enough. Later we had 3 spd autos 4 spds and on the floor. Then 5, and 6. My GT-R has 6, but a DCT... and after some seat time I grew to love it. Not having a 3'rd pedal and lever to deal with enables both hands controlling the wheel and more time to concentrate on driving vs manipulating levers and pedals. It was disappointing at first, but it didn't take time to adjust and think Ahhh this is better if I WANT TO DRIVE MORE AGRESSIVELY AND REMAIN SAFE. So a 3 speed tranny was OK. Now we're looking at this mechanical wonder with 9! Would 3 be enough? Sorry I can't give a better basis for my view... and it is just that- my view and not something I'm trying to push on others. Once they are in production and out there with assorted drivers, we'll know better what was good and bad, enough or too much etc. OK, off my soap box.