Two airlines ago we had AM trips and PM trips. Some like morning flying and being done early in the day, some the other way around. Better on the body clock as well when daily show times are kept consistent. I know this only helps commuters on one end coming or going but overall I think this stikes a good balance and is safer. Build efficient three day trips that a commuter can bid in pairs. In base guys historically like three day trips as well. With some massaging it could work.