-Include William Afton's office

-Add a big vent system that also leads into the cielling with the Help Wanted Mangle mini-game area.

-Add a kitchen, we've never seen this in FNAF2.

-Make the layout more like Chuck E Cheese, party rooms connected to the main area and then the party rooms in the security hallway are replaced by storage department rooms.

-Give Mangle a better Pirates Cove area than she had in the game, seriously she didn't even have a stage.

-Give the location a Chuck E Cheese inspired exterior.

-Add some police tape on the location and maybe even a police car or two outside, there could be some blood in Mangles cove or something as a big reference to the Bite of '87.

-Make security cameras work with the lights just like the game.

-make parts & service more interesting, that room was completely empty, include a couple withered freddy heads and maybe the FNAF2 endo. Also add a power box to deactivate the locations power, its kinda a tradition.