This phenomena runs up and down US management. In one small station, the bid was a political instrument to reward and punish. Plus the inefficiencies described - uncovered slots with active flights, not enough staffing for active flights, etc. It got hard to tell if you were being deliberately screwed, or just the victim of incompetence.
The agents once gave the manager a schedule with better coverage (laid out in an nice little Excel sheet, which could have been a mistake - the manager had no computer skills) with a few less p/t hours, helping him stay on budget.
80% of the station signed the petition requesting the schedule.
Summarily rejected - US management would rather eat their children than involve the troops.
But it proved the larger point - the schedule wasn't about efficiency or the budget, as had been claimed. It was about politics.