my 2 cents on new rsv system: The huge disparity that we're seeing now is because in some category we have a huge surplus, M88 in most bases. Senior guys are now smart enough to bid the last part of the month off, and therefore enhances their chances of staying home, while junior guys work in the beginning of the month.
Once summer arrives, and the number of lineholders increase, and reserve coverage drops, this disparity will diminish as we get leaner. I would give this system a try till labor day, and see if it holds up. It's way too early to get the pitchfork out.