I'd like to have a richer functionality for the legend's Feature Counts option. Instead of posting just a simple number in parentheses next to a legend entry, why don't we add some math functionality or even perhaps q definition query, similar to what we have in labels?
In my case particular case, in a weekly report map, I need to add to the ever changing number of points in my layer a constant 218 more. Of course, I can do it manually, but I think it should be simple enough to add as a standard feature.