I'm also convinced that we exit the plane in the worst way possible. We basically do it row-by-row: as the people in front of them leave, people in a row get up, get their bags, start walking down the line, and this cascades up the plane. The problem is that there is very little parallelism: while people in the next row to leave are getting their bags, no one is exiting the plane. This is similar to a stall in a proc…
Idle thought I had a while back: Let people who don't have anything in the overhead bins get off first.
I have a better idea: people should have to go through qualification testing to see how fast they can grab their backpack out of the bin and start walking down the aisle. Fast people should get special dispensation, and slow people should be required to leave last. The problem is that too many people bumble around and take forever to do a very simple task.