I too miss a lot of the stuff that used to be on my older Cadillacs.
This to TulsaVic...The cooled seats worked on remote start on my VERY EARLY BUILD 2006. They DO NOT WORK on the 2006 I have now.
It also had the speed limiter at 130...the newer one was set at 123.
I miss the little trash container in the passengers footwell.
I miss the little lights on the fender and over the rear window that monitored your outside lights.
I miss the AUTOMATIC PARKING BRAKE release.

Even tho I probably didn't use it over once or twice a year.
I miss the automatic trunk pull down.
I miss the BIG trunks.
I miss the BIG COMFORTABLE seats.
I miss the smoothness of the older Cadillacs.
I miss the general "FEEL" of the Cadillacs of old.
They just had a silky smooth feel to how the buttons and controls operated.
The new ones don't have that "REALLY PUT TOGETHER WELL" feel of the older ones.
I miss rear wheel drive.
I miss QUALITY carpet and QUALITY leather..
I kinda miss cars that I could do my own routine maintenance on.
One of the service writers at my dealer, told me that the Performance Sedan had 23 separate computers in it. And of course, they all talk to each other via a LAN.
There are too many things that I miss t make a complete list...this is just a few off the top of my head.
I really like my 2006 Performance Sedan, but for $55,000 bucks, it could have been SO MUCH BETTER.
Texas Jim