Greedy pilot union? Hold on here, surely this is one of the more modern approaches to determining what pay to award different pilots.
I personally applaud the NAS union for supporting a payscale that rewards experience as well as loyalty(seniority)
Besides all that, the cost of type ratings and line training far offsets such increased wages. More likely they are interested in making a buck or two through selling the typerating to the "lucky ones" But hey, the last bit is pure speculation!
greedy? maybe but surely not on this point...