Well you’d be hard pressed to find a coach with delam issues in the past 8 years. They started using new adhesives and it’s pretty much a thing of the past. From what I have seen is that the major changes are all flash. New TV’s, bigger TV’s and more of them, Satellite, radios, blue tooth, outside TV’s. Bath and a half, lots of slides, electric and electronic parts, hidden cubbies, better use of space Quality has gotten worse though. Materials have gotten cheaper, quality is horrible etc. Rv’s look a lot nicer now and have flashy bits but it’s all lipstick on a pig. People still keep buying them so they’ll keep making them that way. What should change ?: better R values (windows, insulation), waterproof sub floors, better material and above all, quality control..There is no reason that it’s common to have a punch list a yard long on EVERY single coach coming off the line. How much money is spent by manufacturers to fix things after the fact than if they just built them right in the first place? Like a bad girlfriend though, I still love em..Rv’s that is.