these traits currently roll to apply bonus skill (up to max +12 lol ) during crew payment event (when the unit levels up)
Problem is what happens when the crew man is recruited at high level say 25 ?
24 times that 20% Dice roll to grant bonus skill point DIDN'T HAPPEN !
Some of these traits (the ones expanding ship skill pools totals ) could be quite powerful, yet nobody ever talks about them ! due to the way the game is currently set up .. Early game traits are hidden and very hard to reveal.. You'll end up dismissing (most) of your starting guys that have any of those precious traits ..
Then, when one recruits high level crew members (which can happen from year 1-2 on spy centric playstyles ).. these traits are 'broken' ; not enough level ups left for them to produce significant amounts of bonus skills ...