Science is not the final truth to all things.
Some people have that ability to motivate others to perform beyond ther norms.
M. Jordan, T. Dungy, J. Montana, W. Gretzky, M. Ditka and others.
They have a gift to motivate others to perform at a higher level no matter their performance level.
Madden had it in '08 as an ability and it worked fine without a big uproar from the community.
So it's there already to be used.
Hopefully Madden Traits concept make it in for '13 because after 4yrs on Next-Gen, the only thing that is variable between player's in the game is SPEED.
At some point, player's will need to have some type of attribute that gives variation between each player.
The Washington Redskins showed a few years ago how a stacked roster with talent/ability fairs without that player/coach with some type of leadership attribute on the team to get them to perform above and beyond.
It's such a rare quality that Collegiate/Pro teams spend Millions every year hoping that someone on their roster has this ability.
NCAA FOOTBALL needs player traits period.