I think the young Jean scene is gonna be awesome. I imagine it as a quite dark scene, with Professor and Magneto slowly getting into the house, then we see Jean's parents terrified, but the average movie goer still dont know why. Magneto could ask "whre is she?". Jean's mother, with a worried face, and shudering, says "she's...in that room. Please help us...help her..." Professor looks at the door. As it takes place in the seventies (probably), her parents could not be aware of the "mutation" issue, and treat it as if she was possessed. The canvas around her room are already messing, shaking, and when they open the door, you can see papers starting to fly, furniture shaking and all that jazz, while Jean is sat in the corner, afraid and almost crying...
i hope it starts like that