Occasionally interrupted by a scream and a phone ring, and Ghostface having a benign conversation with Casey.
"Do you like Scary Movies?"
Oh man, a Scream maze would be alot like Halloween 4 this year, wouldn't it? Where the beginning section of the movie makes up a ton of the maze; just going through Casey's house with the popped popcorn and Ghostface yelling. Then gutted Brad and the living room, then out the door to Casey's corpse.
Then all that's needed is a short detour through the school and Sidney's house and you can go straight to the house from the climax. No weird transitions or location overload necessary. The maze designs itself!
EDIT: Then, because it's Hollywood, the blackout scares at the end are Ghostface, with Randy screaming "EVERYONE'S A SUSPECT."