As one who has had an entire RV replaced because it was so defective, I can say that there is one h*ll of a lot of things that could be done differently to improve the situation.
When it comes to towable RVs, it's a disgrace. There is no single or prevailing root cause - it's an accumulation of various issues. It's also the prevailing culture in the industry (RVIA, manufacturers, dealers, component manufacturers, etc. ) that can't see beyond there own noses. Where is the gov't to improve existing standards like say on ST tires or to bring in new standards like say on frames? There's a lack of innovation and it's hard to tell competitor's RVs apart (excepting maybe MHs) and even from year to year. I'd need several pages here to list problems and suggested improvements...
One big problem I see is that you could build the very best RV ever built but how do you get the message out to consumers? Newbies typically get sales pitches from a dealer at a lot or from a dealer an RV show or possibly from an RV magazine (and the most popular mag. is just an infomercial for manufacturers). Personally, I would be happy to pay another 1, 5 or 10 percent more initially for a TT if it meant substantially better quality because we have spent much more on repairs and other related expenses.
When we bought our first TT we were so excited. We've now become hardened and cynical. Wanna own a TT? Better be a good handyman, have some tools and have a contigency fund for unexpected repairs and expenses.
It would be interesting to put together a team of RV owners from a forum like this and present their ideas for improvements to an RV manufacturer that wants to listen.