I was exagerating of course Im just saying, that if they get too complicated, see the BMW I-Drive for proper misaplication of technology, then they might scare away a lot of their buyers. Cadillac used to be the nearly dead age brackets preffered mode of transport, but even I cant deny that they have dropped their age group significantly in the last few years. Thank to the Avalon and Buick....someone took over that demographic.
It's true the first iDrive was too complicated and cumbersome, and many people complained about it. Very interestingly, however, that model 7-series was still a huge success for BMW. Obviously the car had a lot of other strengths to attract reticent buyers, and I'd concede Cadillac wouldn't be able to rely on the same strategy, e.g. the XTS will not drive like a 7-series. Still, it goes to show customers can look past the control layout if the rest of the car is compelling enough.
Re: Cadillac slowly phasing out their old-school cars - doesn't seem like they have a choice there and they need to change with the times. Demographics are changing - 40 and 50 year olds today, who are driving 5-series and A6's will not, barring dementia, suddenly want to drive an old-school land barge in 10 years' time.