@lysergic those are good ideas, esp getting rid of the cutoff in favor of gradual bonuses.

as a different kind of prediction, there could be a new section called something like "they are due for a..." where you can take songs with larger gaps, and compare the current gap to them (ie. the sloth has a 3.0 gap average of 18.9, and is currently at 26. this could get a rating of 1.37, or however you scale it.

it would mostly be made up of songs that don't make the trey's notebook cut, but its always fun to think about what rarities could be due up soon