If they want to bring us closer to the status quo in the freight business they should be moving freight 24 hrs/day and that would mean putting on more daytime runs as they alluded to in their memo. If that were the case, then re-bidding every year would be the way to go as many runs will be added and others eliminated on a constant basis to keep freight moving in a timely manner and re-bidding once a year would be the fairest way to go.
However, if they are going to use contractors to haul during the day than not much will change and it will just be a re-shuffling among the senior drivers with the less senior drivers never having a chance at a run till someone retires or gets fired.
However, if re-bidding becomes the "norm" then I do not believe in "bumping" as it will be only a matter of time before re-bidding takes place. I could stand to be on the extra board for a few months if my run was eliminated and re-bid for another which I would probably get.
Besides, corporate will probably allow the drivers to vote on the re-bidding as they said in their revised memo. They will mail out questionaires to drivers to see what their opinion is or it may just be a ballot. Their memo was a little unclear on this, but letting the drivers decide (due to their long standing policy of no re-bidding) is the best way IMO.