Dumb thought, but I could've sworn Murdy has brought it up as one of the options pre TWDA.
What if Evil Dead..gets replaced with a new rendition of House of Horrors? I could've sworn Murdy had spoken of the options they had for the entertainment portion of the building, and both a 2.0 of House of Horrors or a 2.0 of The NBCUniversal Experience was something they considered. Could be highly wrong, but it could be one of the far more cheaper options that they can go for (And it could even bring in another daytime venue for the park again, like what HoH was following 2006's test run).