They finally booked Reigns correctly. Rather than Cena, they booked him like Shield Roman which was over. If I WWE, I would now just make him an ass kicker and continue to bring out this aggressive side. Perfect booking (but will never happen) is make him destroy Triple H at Royal Rumble. Start to get a bit cocky. Triple H says maybe he can't do it but sure as hell knows someone who can, out comes Brock.
Then they set up a WM32 rematch, Brock vs Reigns. Slowly get Reigns to be aggressive but go in more as the heel into the match (ruthless heel). Maybe in the build up, Brock has similar stomach pains, linking to his previous diverticulis injury. Then you have Reigns going over Brock, albeit with the help of a chair and targeting his weak area. That way you give credibility to a long star. He pins Brock, gets the rub and Brock is protected cause he beat him with a chair and is "injured." Reigns continues to destroy opponents until Summerslam, in the last of the Roman vs Brock trilogy. Both with one win each and both looking strong.
If they do it right, they can make Reigns the next big star. And maybe after Summerslam or WM, you revisit the old Rollins Reigns feud (with Rollisn the face) as Rollins was the one who beat him at WM31. By then too guys like Balor should be on the main card and can compete with him. Then you solidify two more stars in Rollins and Balor (not too forget Ambrose and their history). You essentially create your next group of main eventers (as opposed to one guy beating up everybody...)