I don't think the OP is going after ganking as much as they are complaining on how CRZ exacerbates that activity. Your oppinion of the actual act of ganking a defenseless player aside, CRZ allows players, who's sole mission it is to f..k with other players, the ability to do so with impunity through unnatural means such as CRZ phasing.
I don't gank low level players. My personal preference. If you choose to do so, have at it. But, you should not be able to hide behind CRZ phasing. That is basically using a "design clitch".