Meteoroids and asteroids generally come from well-known directions since the asteroid belt is relatively confined within the plane of the solar system, with inclinations less than 30 degrees on average. But due to the Oort cloud being spherical, comets can come at us from nearly any direction.
If that's the case then the poles would have a smaller cross-sectional area than equatorial regions.
Maybe the poles would be a good place to build evacuation shelters. Getting there in a hurry could be an issue.