These clean sweeps are a good idea, however there's one aspect I'd like to bring to light. If you get a ton of moderators together ready to ban a lot of hackers/rule breakers, the moderators are going to go looking for such acts. This seems very simple. The bad part is as follows; sometimes if you go looking for something that's not there all the time, you may mis-perceive it as present. Such dissimilarities can cause people who were regular players abiding all rules to be banned. Now, I know there are ban appeals and things of that matter and moderators are supposed to look for hacking/rule breaking to begin with, but I just want to bring to light the possibility of banning on the basis of very controversial evidence simply because a numbers game is being played.
Please do not perceive this as hate or anything likewise. I just want to present my opinion and make aware the slight possibility of such actions being performed in the future as to reduce the chances of the aforementioned.