I have not re read all posts, but I do not think someone have put it this way before:Every time I read a post on the 21st century VW, I have to remind myself that the OP objective there relates to a simple airplane that looks, and is, easy to build. Good objective. However, I want to start a related discussion, ergo, a new thread.
Yes, airplanes are expensive, but young people are spending lots of money on hobbies and wants, so, if motivated, many could afford to learn to fly and obtain an airplane.
Consider what the dream of the BD-5 did. It created the interest of thousands of new entrants into aviation. Just consider the raw numbers (from Wiki):
PLEASE do not get on the bash Bede bandwagon - this is not about his shortcomings, but about attracting people into aviation.
So, my question is: What, in the way of an HBA, either kit or plans built, would bring large numbers of people into recreational flying?
A homebuilt quadrocopter/multicopter type vehicle.
Think about what flying toy many young (and not that young) people play with. Quite some of them assemble their multicopter and tune the controllers themselves too. Some modify ready made vehicles. The next step is then something to not fly first person view, but actually fly in person. Quite some airplane builders aspired from model airplane building. Tomorrow it might be full size multicopters.