I feel HN does need a face lift. What with it showcasing the designs of tomorrow everyday and all!
I agree with kijin, the numbers besides the posts seem of no use. We need to use the space so as to get as many posts as possible in the view without scrolling, so I wouldn't mind narrowing the distance between the posts either. Maybe a hover can magnify the post a little. Posts that link to URL could have some distinct style or something.