I think Playable Nightmares would be cool to have. If there is gonna be more nightmares in the future, make them playable instead of just normal cutscenes
And maybe revamp the current ones to be playable too
Like for example, Nightmare 1 could be like you wake up in the office. And youre allowed to walk in there but the door is locked. After a few seconds the door starts banging, and you hide under the bed yourself to get jumpscared by the Neighbor