For me, the size of the seat area is probably the biggest nuisance on a long flight. I'm not super tall, but above average and depending on my body position, ei

For me, the size of the seat area is probably the biggest nuisance on a long flight. I'm not super tall, but above average and depending on my body position, either my knees or shins are always lightly pressed against some hard plastic or metal from the seat in front of me. Not painful, just a constant discomfort, especially if the person in front moves a lot. The biggest quality-of-life improvement for flights, for me, was paying up each way for an emergency exit seat. A secondary benefit that I hadn’t initially considered but turned out to be huge is being able to get in and out of my seat at any time without making the entire row get up or having to get up for others.