I agree that more thought into what people are looking to get out of the RV will go a long way towards getting the right RV from the outset.
I see a lot of similarities between RV buying and camera buying. Many people get caught up in all the latest capabilities rather than what they actually need it to do. Needless to say, in both situations, there is a lot of upgrading, downgrading, etc. simply because the person didn't really think out HOW the capabilities fit into their usage.
For me, I picked up a cheap used TT to get me back into the idea of camping. I hadn't done it for years, and I would be doing it solo for the most part, so I didn't want to put out a lot of money to find I wasn't comfortable. I spent 3 years in the TT while I figured out what I really wanted in an RV. My Clipper is perfect for me. It has all the basics I need (fridge, toilet, stove, bed separate from dinette) and none of the stuff that I don't need (microwave, tv, generator, etc.). It also works better for my travel style than a TT.