I Lobby for it every contract survey time but so far too many senior pilots who enjoy 2x pay if they volunteer to work it while junior folk have no option.
Now that there is a lot more junior folk entering our ranks should get more traction for future contract negotiations as then holidays would surely go more senior if they knew there was some extra bonus for bidding them instead of avoiding them and only picking up for 2x pay.

Ironically every non-union group at delta has holiday pay but ALPA has been successful in keeping it off property at Delta for the pilots.