How about additional "activity" information?
Some of us are actively hunting rda-peditions, while others are just casually adding new RDAs, for example for contest QSOs.
Not easy to separate: some S5 can make more new RDAs in CQ WPX as some VK trying to work UB5O/M.
Maybe: just number of new RDAs this/previous month?
I understand filtering for diploma holders shall motivate me to get paper ;-).
Just before I checked top 1000 and it seems to me 1/3 is not active hunters.
congrats for UFB web page.