The lines for Exorcist and AHS generally seem the longest by far, so I could see one or both returning. Personally, I think Exorcist could make one more round. The public demand is there, and it's probably a relatively easy maze to set up given how much of it is just black walls.
That said, I do remember that AVP lines were considerably shorter in its second year, despite it being hugely popular its first year as well. But it all the other mazes were original (barring TWD, of course), I think I'd be fine with it.
I'm curious if they'll be continuing the 5pm early entry next year. I do have to say, it seems to make a huge difference in crowd management at park entry. Lines to get through security and the park are far, far better than what they were last year (though the new security gate certainly makes a huge difference as well). By getting there right away, I can often get all the mazes done by 7 or 8pm. Plus, for those of us with 5pm parking, it's absolutely perfect.