I too would like to see American Werewolf in London make it's way to Hollywood. As far as Despicable Me queue area, from what I remember, most of the extended T2 queue was removed to house the maze since the attendance had been in decline and they were able to scrap that section of the queue. Despicable Me should draw some decent crowds for quite a while, so they probably won't be able to spare the space. So, I do not see that area being fit for accommodating a maze in the future.
Since Insidious was so highly rated, I could see the maze being rehashed into The Conjuring or maybe a mash up of James Wan's films. (Orlando did Dead Silence a few years back).
I would like to see The Walking Dead be removed from the line up and bring back a strong central character.
American Horror Story would be awesome to see.
Murdy has said one of the meetings were in regards to horror films coming out in 2014. Adam Green (Hatchet, Frozen) has a new movie titled Digging Up The Marrow coming out sometime in 2014 which is pretty secretive at the moment, but is about monsters inspired by Alex Pardee's art. Green is a huge HHN fan and would jump at the chance to work with Murdy.
I've played Dead Space and would love to see that make a return.
Lastly, I'd love to see Michael Myers and the Halloween franchise return. That is too strong and hot of a property to only be used, while the other popular franchises got three years. I don't know if HHN and Rob Zombie still have a good relationship but I'd love to see RZ's Halloween get a maze.