Ok so

1. Numbers would really help. The 1 & 2 hop amount is the most important to gauge an airports connectedness, but they're so small compared to the rest of the bar that you can't see them, and I can't easily compare between two airports, only which one connects to more places.
2. Too much info, I actually like the layout but there are hundreds, maybe a thousand locations, which is insane for a reddit post.