To the comment about what is essentially a master seniority list like what other unionized trades do, like IBEW, etc. Doesn't the union provide the training? In the airline world, wouldn't the airlines have to give up their training departments, and have ALPA provide all the training so each and every pilot could go from one shop to the next as they see fit?
I don't ever see this happening, but I think airline management would love to rid themselves of training overhead.