I think we need to come up with a better name for powered harnesses, because they sure seem to confuse just about everyone who hears about them. They actually arent powered parachutes, they are powered hang gliders, but not yet a trike.I was only giving a definition of my " personal minimum" for the category of Fixed wing ultralight. Sure, I could design a powered chute, but that is a different category of aircraft and isn't my interest area. (If that's what a powered harness is).
The easiest minimum roadable for me to design would be the minimum airplane. Something like the DA-11 with removable wings.
I guess Aircar was asking for each persons view of what minimum is possible or what is desired for that person.
Mosquito Powered Hang Giding Harness