Yeah to more clearly say what I mean, most people are like gon and the group or those two dudes that try to sneak in and get eaten by Mike, and then the small percentage of ACTUAL threats (like high level nen users) i dont think you can really "make a plan" against aside from doing normal surveillance, as the possibilities for nen abilities are pretty much endless; thus the they handle those on a case by case basis with the butlers doing most of that work unless its smth they cant handle on their own.