Makanix, since we probably aren't going to make it anyway, try this.
Try creating a "Paper & Pencil" addon, where users will be able to place a "paper" brick and "write" on it with the Pencil tool. When the paper is hit with the pencil, a GUI opens that allows you to write anything you want on it, like a notepad.
Also later on you can include the "Book" brick, that will have the ability to write with multiple pages on it.
