Chart Trading
My initial assumption that pie menu controls would enhance chart-trading in a radical way was only being held back by my perception that pie menus had never been greatly adopted. But after much research I discovered the usability wonders they provide, incredible error prevention and tremendous speed, that I must assume have not received wide adoption for their development complexity, or contextual inappropriateness, except in the video game industry, where these things find a natural home.
This is a revolutionary design in the world of chart trading.