Guy Betsy:

With your current status with CX, and the fact you were full fare J class passenger, I would say you will get a rather serious attention from CX. But I doubt if your condition 4 and 5 will be met, but worth a try. Also, would they really forward the letter to the CEO??

Also, did you mention your occupation in your letter? I'm sure they will not want to anger someone who works in the travel industry...

cheer*s