I agree with your assessment of the Dodge Caravan kit, mainly for the above reason. This is my 1996 Grand Caravan Mark III high top. I bought it new and we joked at the time that it would need to last 13 years since it had 5 years of payments, followed by sending my 2 daughters to college 4 years apart. We figured we wouldn't be able to buy a new one until they both graduated. Well, that all came and went and we still have the Caravan at 180,000 miles. And we won't be getting rid of it any time soon. This is Caravan number three for us, we had an original 1984, and a 1990 Plymouth Grand Voyager prior to this.
Lindberg originally tooled this one up to be a promotional model for Chrysler. Note that they had done Dodge pickups and Chrysler convertibles as promos. Something got screwed up and the promo never was made. So it did get released as a kit and Lindberg was amazed at the sales. The first shipment was immediately sold out. I know I gave a few away to my fellow Caravan owners who enjoyed assembling it with their kids.
The problem with getting mainstream cars today, is that most of the annuals and especially the Johan / Excel generated promos of Rambler 4 doors and wagons were all a by product of the automaker's promo programs. So basically the tooling was done on that contract and the eventual kit runs were gravy. And the model car market was much larger then than today. Back in those days a kit that sold 500,000 copies was a loser, today that number may be 10,000 so the financial return just isn't there.
If indeed the car manufacturers were to order up promos today, they'd be more like the Maisto diecast cars than plastic kits.
This earlier Caravan and Voyager were done as promos by Brookfield Collectors Guild. They are metal and the back is a bank, so there is only the front section of the interior and the windows are blacked out instead of cut out. Other than that these are very nice replicas. I also have a Voyager in red. Maybe a resin caster can do this one with the rear windows open. Note that these can still be found in the $20 range.
Brookfield also did the cloud cars.. Dodge Stratus and Chrysler Cirrus, but not the Plymouth Breeze. They also did Neons, both 2 and 4 doors. I believe these are all plastic. I also have the Intrepid and Concorde. They also did a late model Monte Carlo and full size Chevy van. All of these have been taken apart and folks have used them as a basis for decent models.