(Made before Nightfall, lodestar spoilers)
Okay, so I'm going to make this explanation as short as I possibly can, due to my tendency to ramble.
This was made for the purpose of keeping all of those kotlc theories that everybody's always commenting for reference and addition. This is honestly pretty much a collaboration of the kotlc fandom community in order to try and guess the happenings of Nightfall.
If you have any theories of your own you want to add, then comment them, and I'll add them to the story (that's kind of the point). I'll try to put everyone's username next to their theories, but if I miss you, then feel free to comment and I'll add you.
All credit pretty much goes to Shannon, the queen herself, and the usernames I'll try to mention next to their theories.