4. Zone seating by airlines. There's no rhyme or reason to it. Often when I'm an inside seat, I'm zoned later. When I'm an outside seat, I'm zoned earlier. This isn't rocket science. Inside seats should be seated first, then outside seats.
God yes.
Ideally, there would be 18 zones:
Rear 1/3 of the plane, odd-number rows, left side, and even number rows, right side -- window seats
Rear 1/3 of the plane, even number rows, left side, and odd number rows, right side -- window seats.
Rear 1/3 of the plane,Odd left side and even right side -- middle seats
Rear 1/3 of the plane, even left, odd right -- middle
Rear 1/3 of the plane, odd left, even right, aisle seat.
Rear 1/3 of the plane, even left, odd right, aisle.
..repeat for middle and then front 1/3rd.
Would never happen, but the whole plane could board in six or seven minutes.