The runescape wilderness has changed and there is no more "pk" except in some minigames. More people prefer the old wilderness instead than the new one. The problems with the new one is when trying to get to one of the minigames, you either killed or attacked by a revenent or you may get lost.
Revenents are quite irritating as you may have a scarce chance of escaping them as they freeze you. In the old wilderness you could kill anybody that is nearly the same level as you. In the new wilderness, the only place you can kill another player and keep their stuff is in Bounty Hunter, but the problem is, when you have gone up a level and you can no longer enter the low level crater, and you have to enter the mid level crater, high level players are also allowed in such as lvl 90's-100's and they kill you for no reason even if you dont have any equipment with you. Some minigames are fun such as Clan Wars and Fist of Guthix.
The bad thing about Fist of Guthix is that you have to wait a long time to get in because their are too many people inside and you have to keep clicking on the entrance. Also sometimes it logs you out and you end up losing to some one that you could have beaten.