Obligatory Troll Post:
What if this thread was never created?
We wouldn't have lost anything of value
Now that that's out of the way, I'm not entirely sure about the rules, does someone propose a What If? scenario, and the following poster describes it and adds a new one? or everything is theorized and answered in the same post?
You could help me open this jar of pickles.
What if in the episode of Death Note with the Lind L Taylor broadcast, Light had decided, "Nah, this smells too much like a trap" and not killed Mr. Taylor? (or at the least, had waited until a week or two after)
Then Mario Kart would be very very different.
What if Media Molecule teamed up with Nintendo? (Specifically, the people who worked on Super Mario Galaxy.)
Sackboy would be playable in Super Smash Bros. 4.
"What if God was one of us?"
You gotta believe me when I scare you away, all that I wish for is that you would stayThe sky would be far more colourful and a lot of puppies would drop from great heights, dying horrible deaths.
What if Tv Tropes wasn't as addicting as it is?
A different shape every step I take A different mind every step of the line

I think you know what this thread is about.
I got nothing, somebody else make the first What If?, I can't think of anything...