I watched my wife wrestle with major airline bidding for 11 years. She hated it so much she hired a former NWA scheduler who made a business of bidding for people. I’m certain the tech is much simpler these days but I’m also certain that I love knowing exactly when I’ll be working a year from now. I don’t use them often but tour slides, tour swaps, and PTO can move things around when it’s important enough.