If it is, I hope they do a better job than Scarey. I worked that house, so it holds a special place in my heart, but it confused so many people, because if you were not a dyed in the wool HHN fan, you had no clue what was going on. That, and it really suffered from the vinyl curse. (TRUST: The scares in that house would have been SOOO much better without the vinyl).
If it is a "mashup" I hope that HRBG intros each room, or something like that to give some cohesion. With the rather mixed reception of Welcome to Scary, I don't know if they will do another mash up so soon. I really do like the idea of HRBG hosting "RUN", since this *may* be the last year that location can be used... I have little doubt that as soon as Hollywood Drift opens, FF will close.