Bong,
abandon this archaic promotional mechanism and promote on qualifications and experience.
and leave all pilots, especially those who speak their mind (quite often for the betterment of the organisation) wide open to abuse, duress and intimidation in the form of holding back of commands and other unpleasant, unjustified consequences just because you don't suck up to the boss, buy his wife a drink at the company Christmas party or bend over and take it up the choof.
Seniority may not be to our complete advantage at the moment but then with the pilot shortage that is about to crash onto CEO's desks, pay won't be a problem either. Let's not throw away in a whim something that has served the pilot fraternity well for many years.