What was more likely. CX buy &install a cool new system at great expense that is able to optimise pairings/ rosters in ways that could never be done manually.
They use the system to find ways to build better QOL rosters, with the same efficiency
They use the system to give crew a much improved QOL, at a small efficiency trade off, because they want content, rested crew
They use the system to squeeze every legal ounce of efficiency, regardless of QOL issues.
Answers to the project team, please