2. The Retirement Of John Cena And Randy Orton Headlined WrestleMania
By 2020, both John Cena and Randy Orton will have wrestled 18 years in WWE and between them have nearly 30 WWE Championship reigns. Orton's already showing signs of slowing down, and let's presuppose that by 2020, John Cena will be 43 and maybe fresh off of a few years working as a heel. Let's presume if that's the case, Cena might see a babyface turn and retiring on top as the most ideal way to finish his epic career. The build for Cena vs. Orton is simple. They are going to wrestle one last time, with the winner going down in the history books as the best WWE wrestler of their era. Involve every single legend that both of them has wrestled in the build, and it's MONEY.