Another problem is that mobs can stack up a lot (I had a 21k cow and a 19k sheep once). If you kill them with lava there is a chance you crash the server. Not sure whether this has been fixed yet, just pointing it out.
Good luck to all those applying.
I'm restraining since I am not as active as I used to be, and because I don't have enough time when school starts again.
I like this idea. It gives people an opportunity to receive a rank, who previously were not able to purchase a rank. But a little question: Would you be able to save up for a rank such as Foxking? Or is it just the first few ranks?