When the rules of the game are changed then everyone must be reset to zero. You cry babies are just that, whining babies. You can't say before a poker game, Aces wild, and then 2 hands later say, aces are = 1. This system will change nothing anyways. A 30% pdef/mdef debuff is nothing, that is equal to using a freya rose. So pk all you want and use a rose and voila, debuff is null and void. I rarely pk using a rose, so now I will have to use rose, wha wha. I've bought toilet paper more expensive than that in the last few months.
The reason there must be PK is because this is an alt game now. Top players (at least on Chronos) don't play their mains out in open field, they run at least 2 alts and some really bad men run 30+ alts to farm & gather adena. The mains sit in town as they watch radar for war tags to gank. Also detagging for xp is NOT a valid reason not to PK you. Just because you got no clan or some random clan this week, the evil ones will and do go straight back to the same clan. Known enemies are known enemies whether on mains or on alts and should be PK'd, period end of story. There must be Pk's in this game because there is a 24/7 afk macro system now in game. Without the option to PK the map would be filled with summoner bots.
The clan system should be changed so that if you detag or are kicked you can not rejoin that same clan OR their ally for 1 month. That will solve the PKing of those losers that detag to xp. Some even detag in the middle pvp to make you go red which is exploitation of the rules and should be just as much a banable offense as exploiting cursed sword boxes before they are up for attacking.
If i'm certain a toon needs to be PK'd to stop an enemy from xp or farming then I'm going to PK and if I'm uncertain of a toon that might need to be PK'd then the only way to be sure is to PK.