When we evaluate defensive prospects, there are certain translatable traits that the vast majority of young defenders will need if they are to ever become NHL defenders.
They need to be strong skaters forwards, backwards and in transition. They need to handle the puck well, able to softly maneuver out of defensive zone traffic to move the puck or skate the puck up ice. They need to be patient with the puck, and able to use the former two traits to wait for the play to develop, rather than force an event.
And while some defenders succeed in the NHL despite lacking one of these traits, making up for it with pure strength or reach, it's tough to be an impact player without all three.