Guys, this is not that difficult. Status quo.... if you have things going on at home you don't have to come in and save the day and sacrifice your family time to cover open flying. If they call you and offer a trip that works for you, then take it and enjoy the extra money. Basically don't do (or not do) anything that is motivated by the emotion caused by negotiations. If in the end all flights get covered then great. If not then the company needs to figure out how to properly staff the airline properly.