Census+ first goes about doing 1-60 30-60 45-60 etc... and there are a lot of other ones and i think you know what i mean. Since almost all server have very large populations why not get rid of those queries and go straight to either quering in 2's or simply individual levels. Admittedly it may save only like 5% of the total time to take a census, and in very rare cases it would increases the time but most likely this isn't an issue as it would be sooo rare. I'm always about reducing the average time and i think this would be a good addition overall and shouldn't be too bad to code.
Thanks btw for the development you've already done to census+, can't ever go back to census!