So originally this was going to be a bigger rewrite for the main story of HN2 as a whole, but I ran out of room and I decided to make them separate threads. This thread is mainly covering the Intro and how I think it could be rewritten.
The game would start off with a flashback/dream and we see Quentin in the back of his van with a board on his wall. He puts up a missing poster of five different kids who have gone missing, including Aaron and Mya Peterson. Quentin then starts up his car and we get the whole cutscene from the main game, except instead of seeing Aaron and Theodor Peterson, we see The Guest climbing the roof of 910 Friendly Court, stalking Quentin. Quentin is about to take a picture, and when he pans his camera back at The Guest, he is gone. Quentin looks around before he hears footsteps on the top of his van. Then, we see "him" Mr. Peterson. He walks out with a shovel and attacks Quentin's van. Quentin is quick to step on it and drive away, but the Guest jumps down and causes Quentin to drive off the road and into the barn. Now the whole tutorial level isn't really changed, but the ending of it is. Quentin walks out of the Barn and is attack by The Guest. The Guest leaves him on the ground, and quickly runs away as Mr. Peterson appears and takes Quentin's camera in fear he may have taken photo graphic evidence of his actions. (This would show how stressed Mr. Peterson is.)
We then cut back to Quentin in his bedroom waking up and he looks at the TV screens and finds recorded camera footage of Mr. Peterson driving away from his house. We cut to see Mr. Peterson with his son Aaron in the car, when Aaron tries to speak, Mr. Peterson shushes him. The two drive to the Museum and we see Mr. Peterson bring Aaron into the attic and locking the door. He sighs regretfully and leaves, which causes Aaron to start crying.