I have decided on what topic I will choose for my next Pasta, and I will be going with #2, which is where the protagonist moves into an apartment building where all of the other tenants are disappearing and nobody else seems to notice. I will be putting this up on the Writer's Workshop once I finish my rough copy (it may take a while, because I have started my second year in College and the course load is pretty heavy). Eventually, I may also look into options 1 and 3 as well (I've been warned agaist doing Haunted File Pastas, as they have, indeed, been done to death). Thanks for listening.
P.S. I've also decided to "edit" my failed Pasta (The Sender) and submit it as a Trollpasta (on the Trollpasta Wiki, of course :3 ).