First would like to say, was hesitant before i looked at it, but it really is awesome, great job. On to the fun stuff, the real killer feature for me would be adding a resorting of ranking by maximum paragon level. As in, being able to type in 1000, and then it will show the ranking order of only those people who completed the rift with a paragon level of 1000 and below. With the inflation of stats due to paragon level it would really be interesting to be able to only look at those close to you in paragon level as a yardstick of competition.
As someone who likes statistics, average paragon level of people ranking, sorted by class might be cool, however certainly not even remotely mandatory feature.