^
Well, on the technology I agree with you, but we don’t know how it works yet. I mean voice control will be more intuitive over time, by hand gesture we still have no idea how did they use it. They also put in a gigantic HUD, how will that work we don’t know either, I doubt that it will be simply larger than before. When I first got my hands on an iPhone X after having the usual iPhones with home buttons, I was not sure about the experience, but when I got back to an older model after a while it was very uncomfortable to use. All such changes will be more clear with reflection over time, so I’m optimistic that they won’t mess up their best car.
On the other hand from design point of view I very much disagree. As I said previously the subjective bias can’t be generalized. What you call “borrowing” from other cars along the Mercedes model range is called design language, which I think was quite lacking before, and even though it might not be the perfect overall Mercedes design language now, at least we see that they make a family of products instead of a neighborhood.
That controversial designer didn’t only made the pretty average back of the CLS, but also the completely gorgeous Maybach 6, Silver arrow, avatar concept, EQS concept etc... lets be honest about one’s accomplishments.
And even though technology has advanced quite a lot and carmakers can make the cars more similar to the concepts, it is still a bit far from making concept level car designs, but we are getting there.