I think I mentioned this before in person, but I'd like to repeat myself just so that others can chime in with whether they feel this pain point too: a lot of travel revolves around other travel arrangements (not necessarily flights) on the same day. These other arrangements are often slightly time-customisable too, but the number of combinations is obviously limited (I can't take a bus to the airport after the flight). Finding the best combination that doesn't require me to wake up at ungodly times is a hassle that I'd like to see solved.