I am all for using the 4-letter selcal code.
It's right at the end of every ATC flight plan, it's under our noses in the aircraft, it's way more random and less confusing than the sequential and similar tail numbers and it's already a legal way of contacting the respective flights.
But I want a Nadjim award for my brilliant idea!!!!!!
(or even better a random monthly US flight and next summer peak leave)
