Hold your horses there mister. Let's see how this plays out before we start advocating making it permanent. It might be as you say OR (based on years of playing with these folks) it will make kill farming by zerging even more of a thing.
People always make an assumption it is a lack of willingness to fight. Instead it is a lack of willingness to fight for bad rewards. And the cold, hard truth (as a semi-professional soloist who plays the AAO side because he is stupid) is the rewards for zerging far, far, far outweigh the rewards for getting zerged. Nothing in here changes that equation and, quite frankly, this may just make it worse since now you even more actively get rewarded for safe kills.