The richlist is cool, I think. Let's say a person has exactly 3 masternodes. Will that person show up with one address holding 30,000 PIVX, or will they show up with three different addresses each holding 10,000 PIVX?
Three different addresses, each holding 10K (plus the rewards for that MN, at least until you transfer them).
That being the case, to be truly transparent the richlist would aggregate the total balance across multiple addresses (where applicable) in the same way the controller wallet does.