Karma system is not the best. 

Let's assume you have a griefer in your spot: no dfs accepted, you pk him, he's gonna be back.. I don't have a grab so it's quite hard to not kill him and feed to mobs. I become red, I get attacked by everyone and lose crystals, he gets the spot.

You will say, well just declare war. War takes 10 minutes and doesn't really DAMAGE the opponent, nor the guild. 

You can record names and try tediously to track them, and you risk to be banned.

Please PA implement a way in which a war can be meaningful and actually damage your opponent wallet. I don't know, maybe by making penalties apply? So wars between guilds become a serious thing... If this is too punishing, some kind of way to actually punish griefers, like bounty hunters, but I in a proper way. Or a function to put a certain pressure against enemy guild that can make griefers wish to not have played that day.

And, most important, do something about ninja stealth. They can be the perfect griefer, approaching only in stealth and rabam stealth, feeding you to mobs, even if they're really bad at fighting and you kill them everytime they decide to show themselves (no penalty there applied unfortunately). I understand stealth is something unique to ninja, but right now it can be spammed if used in a certain way, it's absolutely cringe and as a griefed played I can't do anything about it. War between guilds is just flexing points really, 0 damage to actual players...

In Korea, they were about to add a new war system.

Short: if you start war and other guild will not answer each day war cost you 0,5% guild money, + 0,5% per day, up to 5% per day.

If you cancel war you can't start again war to the same guild for 3 days.

Great solution against war exploiters.

May I ask where you got this from? I would like to read about it(I know a little Hangul) is it mentioned on the KR website?

EDIT: Nevermind. I found it.