Well, the damn thing is supposed to be a negative instead of the positive people seem to be grabbing it as. I can see non-friendly spells getting bonuses against the individual. Since this applies to cyberzombies as well, how about 1 point of effect per 2 points of background count they generate/are in?
Indeed which is why I grabbed it and build "mageslayer" as a character because i could see a character like that though it felt like i was getting that for "free" almost. *Shrugs*
If it did increase the spells coming at them it would definately feel more like a negative quality.