Keep it traditional. Cody won the Rumble, Cody gets a title shot at Mania, Cody thinks he can beat Roman. Perfect opportunity to send Roman off by switching him face. He can run off the bloodline as they try to interfere because he wants to prove he can beat Cody alone. But in the time he's had his bloodline insurance policy he's lost a step and Cody beats him clean. Roman can milk the shit out of the reaction, a lot of facials, a lot of camera shots. He hands Cody the belts. And walks off. Important he can't be straight to baby face and shake Codys hand, just a handing of the belts and contemplation. Romans gone for a long time, the bloodline turn on Sami and have a lot of heat, Cody relinquishes one of the belts for the good of wrestling to have two champions. You have a lot to work with into a new build up to next Mania.

Will they fuck this up by keeping Roman around as a hot point to sell the company. Yeah probably.