I was thinking it would be cool to see the average difficulty of the problems a user is getting correct and failing recently..
For example, including a couple stat lines that say something like:
Average difficulty of last 100 problems:
Average difficulty of last 100 problems user answered correctly:
Average difficulty of last 100 problems user answered incorrectly:
Maybe include an option to change that 100 to any value.....
Of course this could be a premium feature if you wanted
