So right now wwe know exactly what matches are taking place at Mania, it's just about setting them up. They probably realised having Roman win ANOTHER rumble would get him booed (even more) again. So roman will do whatever build up he needs to face the fiend, but without pissing the fans off.
AJs shoulder got separated. He wanted out.
However, people are getting over Charlotte fast. It's a similar thing to Roman and Lesnar. Too much all the time. Push push push push push.