So if Brock loses the title, which by all the recent speculation around a UFC return and Jon Jones calling him out last weekend, suggests that he will then he leaves the WWE.
Braun wins the strap by pinning Joe and Lesnar goes for a UFC sojourn before returning at Mania next year? If they wanted to do Reigns v Brock II at Mania with the latter the champion, he'd have to win the title again. I can't imagine fans getting behind Reigns if he's champion heading into Mania defending v Brock.
Unless plans have changed..