The funny thing is the these rules with hand luggage push me towards mediocre airlines sometimes. Like UA vs SQ SFO-SIN. For a week long trip, I don’t want to check a bag and shouldn’t be forced to, especially in premium economy. It can easily add 30-40 minutes at each end. I don’t quite understand what the goal is here, as overhead bins are rarely full on wide bodies that don’t have a dense seating configuration, especially 787s and A350s.