We Need A "Campaign Theories" Thread

As the title says. It would be nice to decrease the chances of some spoilers with a Halo 4 Campaign Theories and Information thread. I love the Halo story and if it gets spoiled then I won’t have a good time playing Campaign, which I look forward to.

The Campaign’s overall plot is a bit predictable from my point of view at this time.

1- Crash on Shield World
2- Awaken Didact
3- Infinity Crash
4- Procede to battle Didact
5- Fade to credits