Well explained Ken.
I would like to know what your opinion is, someone suggested this to me, If I was to travel on a flight say from YYZ - YVR, if I make up names and book all the seats on a flight ( since J seats can be hold up til departure )and then release it right before the 100 hours or 72 hours, then call and upgrade. Wouldn't that give yourself a almost "gaurantee" upgrade.
I don't think it should be done though because it's kind of unethical.