A major part of the idea behind the new Medal Race format and moving to just one discard in the Olympic Games was to make the sport more accessible and understandable.
This from the president of ISAF, Göran Petersson. I dont know why just one discard makes the sport more accessible and understandable. Full text at:
http://www.sailing.org/default.asp?PID=19823BTW: 1 or 2 discards for 12 races. 2 races pr. day make that a 6 day event + measuring and travel. OR there must be more than two races pr. day.