I thought it would be cool to share this with you :)

Solved problems over time

Rating changes

Rating proportions before and after the round

Rating distribution before and after the round

There is a peak in 1500 for initial (old) ratings due to unrated participants.

Old vs New Ratings (With Unrated Participants)

Unrated participants are a fairly significant part of the partcipants so I decided to include this same chart leaving them out to have a more detailed view.

Old vs New Ratings (Without Unrated Participants)

If you have any suggestions please leave them in the comments.