PATwhacker, It's not the 1990's anymore. Minivans mostly have 3,500# tow ratings that include a fair amount of van cargo before deducting from tow capacity. And my Fleetwood popup has a GVWR a full 1,500# higher than it's dry weight. We put all our food, clothes, bedding, camp chairs, cookware and lots of other misc gear in the camper and it only adds up to 700#. Not even close to max capacity. CCC does vary by model, but it's not hard to find one with plenty of cargo weight capacity, especially if you're not looking for slideouts and such.
Our first minivan was an 03 Honda Odyssey. We've had it since new and it has about 20,000 miles of towing duty on it of its 220,000 total miles now. Every bit of the powertrain and suspension is still factory original. Hard to say that kind of record isn't good towing performance. It's still our backup van and we only bought another because I promised my wife a new one before we hit 200k for her daily driver. It's nice to have a beater spare car though. Especially one that almost never breaks!
Wiring the brake controller on a minivan is a hassle though. I'll certainly grant that. No plug and play harness provided.