WWE should consider retooling the PLE calendar to capitalize on the outcome of its first event of the year and the use of stars with limited availability, like Cena, The Rock and Roman Reigns. Slight changes could make a world of difference and keep the fans invested in the Royal Rumble winners.

With seven matches already confirmed -- including four title matches -- let's take a look at what else could go down in Las Vegas

WrestleMania has given fans countless iconic moments, but not all are remembered fondly. Some incidents were so controversial, embarrassing, or tragic that WWE has either erased them from history or downplayed them heavily.