I think the rationale behind making it agility is based on the idea that it's a very training, instinct and muscle memory intensive skillset so when you're doing it well you no more think about it than the centipede thinks about moving all his legs. Also if you make it Intelligence you open up the can of worms regarding what intelligence actually means in game mechanics. Does it refer specifically to actual intelligence or does it refer to a combination of intelligence and education level? If it's the former how do you increase it with (XP) training?
I've got a character with an Intelligenece of 27 but nothing else about his background or skillset would suggest he should be some sort of drooling moron who can somehow operate any gun he finds but can't drive a truck without flipping it. So typically I just assume he's got the equivilent of an eighth grade education which fits with his homeworld, I often express this by playing his as posessing poor impulse control, having him mispronounce words he reads or failing to comprehend really complicated intellectual concepts but being clever enough to trick people through underhanded methods or demonstrate tactical thinking and "street smarts".
I think it makes sense that the Voidmaster makes his ship pilot tests based off agility the idea being he's experienced enough behind the con that he has a feel for the old girl, the tactics employed as to where he flies it and what everyone else does along the way fall under the umbrella of actual role play.
Edited by Amazing Larry, 05 January 2014 - 01:45 PM.