I believe the answer to their refusal problems is there to diagnose, and it should have been done years ago. A small number of pilots are responsible for a large amount of our "buffoonery". They should have either paid them to go away years ago, or fire them, and let them sue United.
The problem is flight ops leadership has no balls, and hasn't had in a long time. A simple cost benefit analysis would have shown this was the cheaper option. The amount of money these guys have cost not just the airline, but our passengers, in missed meetings, holidays, missed daughters weddings, etc, is staggering.
Nobody wants to make the hard decisions.