A better idea (which i think that PKers will disagree with, for some unknown reason...
) is that we only have peaceful mode and kingdom mode.
p mode is normal, bla bla bla.
but in k-mode you have certain stats, you dont get any exp for killing monsters while in k-mode (but you can kill other players who are in k-mode) and you dont drop items when killed. This would encourage k-mode to only be used in wars/battles and would lessen PKing generally.
I'm probably going to be disagreed with and, maybe, flamed as well for suggesting that , but oh well...