I really wonder what is the use of having ICAO?.......Since it seems to me everybody does there own thing...The only real wonder coming out of ICAO is most likely the 4 letter airport ident. But other then that wow pretty useless. I would really like to see them emphasize on the international more.....but that is my dream to be hehe. And yes an ICAO licence for pilots and ATCO would make the aviation business more of an open trade. After all the companies still have the power to decide who and when the hire people but it would be nice not to hear you are not qualified when well u have been doing that exact job for X years. Right?