There should be no cap, everyone would reach there and have nothing to do ._.
On another note...for the people that said something about the server not getting involved in enough rping...I have 2 solutions to that.
1) Join Forest, I hold rp events for my members quite often
2) Straighten out your Kingdom and arrange rp events with other kingdoms and errm....WAR IS NOT THE ONLY MEANS OF RPING AMONGST OTHER KINGDOMS. (Sorry if you already knew that but alot of people seem to not get it.)