This is a massive direct benefit for the few, but it has trickle down effects for many. Those senior FOs who were bidding LCA trips but no longer can will now do one of 2 things:

1. bid up in pay rate -- most of them could be FOs or even captains on much better paying equipment. The category they leave sees no benefit to them leaving since the trip goes into the LCA void, the category they move to sees a relative loss of seniority for every pilot below them.

2. stay where they are (and I find this unlikely unless they are seat locked) - in this case everybody in that category takes a seniority loss directly proportional to the number of LCA trips per month. If a category has 10 LCAs, that equates to 7-8 lines (probably very good lines) that basically just disappeared into the ether. That means less hiring required and more people available for reserve.