3) More like a helicopter than an aeroplane? Nope. Airplanes are MUCH easier to fly than a helicopter; the average person cannot do this.
Perhaps they're thinking of a Gyrocopter (or Autogyro). That has the advantage of small size (No need for large fixed wings) without the complication of dealing with a collective stick system.
Personally, I was always interested in the "Land Shark" project (Archive.org link, as the original has since disappeared). The idea was to have a tadpole-style trike that, when on water, would use it's turbine-shaped rear wheel hub to propel it as it hydroplaned on the front wheel's lowered mudguards. Simple, and effective, but unfortunately it never got off the ground. A shame, really.