I don't have many ideas, but for example...
We could create 2 brackets (based on rating), let's say an upper bracket for the top 8 and a lower bracket for the next 16. Then, we could take the top 2 players from the upper bracket and have them compete against the top 2 players from the lower bracket, and then have a final (this is just an example, I'm not very good at designing brackets)...
