I think PBS favors the senior pilots. They get to really tailor their lines down to every detail. Duty in days and times, days off, length of trip, credit per trip or average per day, layovers, layover length, and legs per day are just a few of the many options. If you're a junior lineholder, you get the least desirable trips left at the bottom of the barrel. I can't complain though- it's still far better than reserve. I guess the biggest issue is it's so complicated, and leaves a lot up to the company to decide what gets awarded.