10.5 hrs stick time..mmm lets add 1 hr each turnanround and 1.5 hr report Longhaul and 30 mins post flight. Thats 14.5 hr day.
Unless you qualify that with a unfavourable report band and whole monthly pattern it doesnt seem too excessive. In fact its a normal day in the uk outside of ba.
You have great equipment, good food, full automation to ease the workload ,backed up with stringent sops, so not really an issue as you have presented it