I didn't know that you no longer had your Airstream, Utee.
Good that your new trailer is more functional, though.
The new "traditional" Airstreams have fewer pieces of aluminum making up the skin.
It was bittersweet to get rid of it. Not only was it much cooler than a "white box" RV, but I also put a TON of work into it. Easily over a thousand man-hours involved in my restoration.
But it was also almost 50 years old when I got it and I spent as much time repairing it, as I did camping in it, whilst out on campouts. Ultimately it had to go and everything on the new one just "works" without tinkering and fretting. The new one also has a large slideout which provides a TON more living space, and the kids have their own bedroom all the way at the back, while we have our own parents' bedroom at the front. Way more storage on the new one, too.
Also, you're 100% right about new Airstreams using fewer panels. Over the past 50 years, they've figured out better ways to form the compound curves on the panels, and so they don't have to piece together as many little bits, to get the same curved shape.
Here's what the endcaps looked like on models even older than mine, it has 13 panels, versus the 7 on mine, and the 5 or so on the newest ones:
