I've had good luck flying, flights usually on time, never had luggage lost. The airlines "padded" their schedules when late arrivals started beings reported, so we usually get in early now. If we leave late, a pilot will claim they are going to try to make up the time lost, which I figure is bogus. It costs a lot of fuel to fly faster than standard cruise.
We were a few late out of the gate going to Paris here and were Number 20-something to depart, I think we missed our slot. We burned a lot of fuel sitting.
There is a development for electric taxiing but no airline has gone for it. A small generator in the plane would provide the power to electric motors on the wheels and the mains could be turned off.
