#3 Goldberg vs Roman Reigns at WrestleMania
So, clearly nothing is official here. And rumors are just that - rumors. But, let's do the math. It's OK. It's not real math. It's Article About Pro Wrestling math. So don't worry.
So, Goldberg defeated The Fiend at Super ShowDown for one of two reasons: either the Crown Prince wanted to see it happen (not an entirely unreasonable suggestion), or WWE has big plans for him at this year's WrestleMania. The latter is more likely, all things considered.
Now, add that to Roman Reigns finishing up his feud with King Corbin (oh sweet Jeebus, please tell us he finished up his feud with King Corbin), and it's time to start considering what DA BIG DAWG is going to do on the Show of Shows. The answer is: a match with the same hype as Hogan vs Rock or Cena vs Rock.... just without, you know, the Rock. How in the world could WWE pass that up?
Goldberg could spend the month between now and WrestleMania training (while squashing some challenger at, say, Elimination Chamber to stay in the public eye), and WWE could build up this match to something massive.
Bray Wyatt already has two world championships - and he'll win more. But, Goldberg vs Reigns has a very limited window and it has to happen now.