Careful Kel, you're actually talking SENSE.
Ye but obvious sense. There's nothing new that pks kill low level newbies and occasionally cause them to ragequit or that there's not much sense in terms of causality to pk everyone. If I was a total newb, first thing I'd write in my review here at forums would be about pks.
If everyone is aware of the problem, what remains to do here is to nail the reasons why people pk mercilessly. Basically it's all about lack of consequences and difficulties in recognizing enemies or the whereabouts of an encountered stranger. A man with rifle could be a sniper wielding mass-pk who's choosing to shoot you in the eyes at the very moment, or just a nub with pipe rifle typing to say "hello". Since the one who gets first shot is often either instant winner or at better standing, people are trigger happy and slaughter everyone they meet just in case. So part of the problem is also too fast and deadly combat - the fact that people die too easily.
Npc factions might solve our problems if we could recognize the enemies of our factions, then there was no question who to shoot.