More arguments:
- Realism: soldiers can disembark quicker if they sit on the outside
- Realism: because of better view for outside soldiers, they have a better situational awareness
- It looks cooler with the four of them outside
A scripted partial solution is 'this lockCargo [0, true]; this lockCargo [1, true];', to completely block the inside positions, but it would be better if the first four seats are all outside by default.