#1 - Segment With Ronda Rousey

Even though this wouldn't exactly make him popular with the fans in attendance at MetLife Stadium, the truth is that The Rock has been a huge supporter of Ronda Rousey in WWE, as the two had one of the most memorable segments in the history of WrestleMania back at the show's 31st instalment.
Prior to the show's main event, The Rock could once again find himself alongside Rousey to offer words of encouragement prior to the first-ever women's WrestleMania main event. It's also possible that he could do the same thing with Becky Lynch if the company wants him to get a positive reaction from the audience, but because of his well-known friendship with the current Raw Women's Championship, it would make more sense for him to be pro-Rousey.
Look who just shut down all of Tony Khan's critics! More HERE.
You also can't rule out the possibility that "The Great One" will endorse whoever ends up winning the show's main event before WrestleMania 35 goes off the air.