When I demonstrated spinning at a fibre farm's open house this spring, I got to teach two girls how to use drop spindles. The younger, after trying drafting, preferred to spin the spindle while I did the drafting for her.
I discovered a kid-powered spindle is pretty zippy.
I wonder if an electric spinning machine could be arranged with the orifice pointing upward for a similar effect? No stopping to twirl the spindle or wind on, just drafting.
I would miss the hum and feel of the spindle, though.