Hmmm...think I'll make one, with the wings in the middle, and two tail sections, one fore and aft. The engine would be a ducted fan type, with adjustable pitch, mounted in the center of the fuselage/wing junction. The plane could fly forward, backward, and with judicious use of opposite rudder and elevator, could do pinwheels in both the vertical and horizontal planes, or anything in between. It could even do weird gyroscopic gyrations, with use of the ailerons while pinwheeling! Man, this is big! Really big!

It could even rock like a see-saw while you taxied on the ground (smooth surface), or spin like a top at will.

Man, I'm gonna be a billionaire! ;-}

Charles