Don't change it.
In the old days there were players with perma karma on and they choose that way.
It will make you think twice if PKing is worth and not just being the asshole who decides who lives and who dies because you can.
Streamers can choose not to stream or add stream delay.
If karma is changed, make sure it is NEVER reverted because oh boy, I will be pking a lot and no, I will not be streaming as most players do not stream.