Seniority list
Well the seniority list is a double edge sword........keeps the deadwood fully entrenched and the company frightens pilots into thinking that if they leave the mothership, all is lost. On the other hand, it ensures that brown nosers do not get to be promoted or upgraded at company's whims and fancies. However when and if the pilot community and company both strive for meritocracy, then the seniority system will be detrimental to development of good and durable talent in MAS.