Last year STARTED the new era, which Havoc was a part of. And there is rumor that the first house-to-street is happening. If it's true, it'll blow your theory out of the water. Out of last years new houses, Havoc and Catacombs are the only ones I would actually care for regarding sequels. Bare in mind also, they've done sequel houses before that were not from the most popular houses. Two sequels to Scary Tales for example (good houses but not houses of the year) and nobody complained.