This game need chanel with open pvp or pk system, sometimes ppl just coming to your grind spot and you can't do anything with them, amen.
Lets say that we can open PK with ctr+v now our name becoming red and we can attack every player outsisde the city/every player can attack us.
PK system can base on Honor points, we getting honor points by killing monsters and losing it by killing players.
lets say that we can have maximum 30k of honor points, one monster at our lvl can give about 10 points.
If we kill player at our lvl we lose 5k points.
player who have lower lvl by 1 - 10k points
player who have lower lvl by 2 - 15k points
player who have lower lvl by 3 - 20k points
player who have lower lvl by 4 - 25k points
player who have lower lvl by 5 - 30k points
Every player with negative honor should stay red until he dont get back his honor points, he cant turn off pk with negative honor, he can be attacked by everyone, if he die he will lose more honor points, and high amount of durability.
Player who get killed by PK user should lose high amount of durability.
Players with negative honor under 30k should lose item upgrade if they die (this will protect from pk bombing)
PK should be able from lvl 30+
Here can be max 5 lvl difference, thats mean 36lvl can't fight with lvl 30, or 30 lvl can't fight with 36lvl
PK system can add more fun to this game and this idea is not completed for sure, here is still some things that need to be thinked and upgraded.