I totally agree about making sure you pack/load the tow vehicle and trailer correctly. Another consideration I think is how you drive. I've seen people blast down I-15 at 80+mph and driving pretty aggressively towing everything from fancy Airstreams to dune buggies and everything in between. I'm generally driving about 65mph and drive pretty conservatively when towing.
I'm not debating whether or not fancy hitches should be used to correct overloaded spring conditions, or if weight distribution systems are better than air bags. My air bags are pretty new--about 6 months old and they leak about 2-3 psi every 2 weeks. Will they leak more as they age? Maybe, but I just need them to perform reasonably well for another 3-5 years, at which point, we'll likely get a proper tow vehicle and larger travel trailer.
I will admit that the 80 series is not a great tow vehicle, and like others have said, I would not pull anything more than what I have now. I am under the gross combined weight rating for a '94 LC by at least 2500 pounds. I'll also say that there are places where we travel off the beaten path and the use of a weigh distribution system would hurt off-road performance when connected. I suppose I could still use the spring bars for highway travel, but I think aggressive drivers pose a greater risk to safety than me not using a weight distribution hitch with the Aliner.