I was down on the CBOT financial floor for a couple of years trading my own account, and to me the floor was basically a few "haves" and a multitude of "have nots" in terms of access to order flow. All of that propaganda about floor brokers 'dual trading' for the greater good of market liquidity and the open outcry markets as a 'beacon of transparency' is, to put it politely, gross misinformation.
The day they started 'Project-A' electronic trading during the off-hours was the day I started making money. Electronic markets are a spread trader's wet dream, and allowed me to implement strategies that I never had access to in the Bond or Note pits.