Well, i have an idea too:
It's about the revival place option. To put a higher time for revival in the same place or disable it (or put an item to use it). The reason? Well, now that ks rule was removed sometimes you can think "If i kill this one, i can get the spot, even if it cost me 2k rank point" but, if you do it's not worth, because he can simply revive in the same place so, why to do pvp? Why to kill if later i can drop and he doesn't lose neither time? If someone is trying to fuck you doing ks or stealing items you can't do nothing because he revives in 10 seconds. In this way at least you have a higher time due to the cost of your rank points. If you want to play as a villian it has no sense neither, because he can revive in 10 seconds and start to try to make you drop. No sense, you prepare pvp as an alternative and it has no positive effects in any sense, neither to farm or steal. Even to other kingdom people.