They didn't roam much though. To me a scarezone is a location (or zone) you go to where there are scareactors. A roaming horde, to me, is just that. A horde of scareactors that roam around the park so you never know where they are. You could always go to transformers or simpsons and see actors so I viewed it as a zone because they had clear boundaries they could not go past (just like all the other zones).