The WCO was designed to beat defenses that stacked the line of scrimmage. Almost 4 decades later that is not the typical defensive alignment. That makes the WCO kind of a tired remnant of the last era. Variations of the Spread are better suited to beat defenses featuring 5 DB's or 4 and a rooster. Probably the Erhardt-Perkins deserves another look at this point also. It's very effective to run the ball between the tackles and then take shots up the field when the defense puts 8 men in the box to stop that. It eats the clock and also creates quick strike opportunities when the defense breaks down.