Prevost has never been able to keep up with the converters. Not all, but some. As converters reached or exceeded axle weight limits Prevost scrambled to keep up. In the early 90's two converters had so much weight on the front axle that Prevost came up with retrofits including bigger air bags and double shocks per side to deal with the extra weight. I am sure this has been the pattern for years. I have not seen a time in our years of ownership where one or two converters exceeded axle weight limits despite Prevost continually increasing them. Our front axles are now rated at least 50% higher than what they were when we had our first coach. I doubt they need that for seated coaches unless people are 50% fatter.

You are right in that now that axle weights are up against the highway limits and worse, the motorhome wheelbase now matches the entertainer. Those front axle limits are going to be quickly reached by converters unless they can repeal the laws of physics. The only solution apart from ignoring limits which some converters have done, is to shift to an aircraft mentality where the design of every system, component, and material is biased towards reduced weight. If new coach buyers want 3 or 4 slides and granite floors and enough battery power to run the AC units for several hours then today's prices will look like bargains.

Buyers have to either pay the price or be willing to accept less in a coach. I don't see that happening anytime soon because what's the sense of spending as much as what these coaches cost if the owner cannot brag about having everything powered including the toilet seat.