Arm talent. Are we talking distance thrown? Brees didn't have a great deal of that. But the ball could be delivered with enough zip. And even when he lost that, he was accurate. He threw a very catchable ball.
Trask does similar things. So is his air velocity low? Can he not flick the ball 70 yards downfield like Fields, Wilson, or Lance? Are those nice to have traits but not all important? Being able to extend plays and put the ball right where it needs to be are far more important.
And I'm not even saying we need to draft Trask...but I wouldn't be upset if we grab him.