4 hours before first flight of the day in major ports would be better. Lots of broken aircraft sitting on the deck in the morning. Then all the work needs to be done in the morning. It reinforces to all just how much work gets done at night. And we're not affecting pax directly. No LAMEs milling around in terminals.
First wave delays will hit the company all day.
The only disadvantage is there's no
PR opportunity in the terminals.