When some of you guys feel that PvP happens unfairly, lacks any fun or is simply not interesting to you, you
can in most cases just avoid it. It's true that certain, specific character concepts may be impossible to do without the PvP component, but there are plenty others which can be done. With l337 experience in competitive arena and action servers (like, 7 years ago, thankfully) and after way too much practical experiments and number crunching, I'd be tempted to say that NWN is, and will be, full of PvP tactics that, when executed correctly, will bring victory with little variance or chance for the opponent. That's how it is and it would be very hard to change - but then, with such a complex and diverse amount of build configurations, almost any game will end up with skills and builds that outshine the others.
There's nothing wrong in avoiding PvP and simply saying
no to it when you feel that it'd just bring more harm than good, as long as you're ready to compromise in your RP. I've happily been doing just that for years now, mostly since NWN PvP just isn't my thing in the end. And despite having a tendency for the openly protagonist, I haven't had PvP forced on me more than, at most, thrice in six-or-so years.
Additionally, there actually should be a system in place that reduces KD spamming by quite bit. Have a goodish AC (Improved Expertise it if you suspect enemy is going to KD) and what discipline gear is available and you should stand a chance to block it, too.
If it were up to me, I'd make timestop deactivate on a player if he gets attacked. That way it can still be useful as a defensive spell (caster using it to buy time to buff) but can't be used as an "I win" button.
That actually might be possible, I think Time Stop gets recorded at the individual character level as a "freeze" buff...
Possible changes to Time Stop have been discussed.
I couldn't, though, say if anything will be implemented and if was, in what timetable.
So in the end its a game we play with rules set by the DM's and enforced by the CC.
Rules are created by the developer team and enforced by the DM team. CC can not enforce rules. A bit in the reminiscence of the tripartite system.
Addendum: A new topic should probably be made for any further discussion on the details of what is desirable for PvP mindset.