This would be the big one for WWE to spring on the audience. Brock Lesnar is the biggest star in the company, and due back in the next two weeks for a big summer run. Starting that early and catching the audience by surprise would be a sure fire way to create a huge amount of buzz. It also sends the message that fans need to subscribe to the WWE Network for every show, as you really never know what you might miss. Sending him out there is a risk, but the creative opportunities and buzz factor could be worth it. Social media (which WWE loves) would go into meltdown with Lesnar mentions if he came out at MITB unannounced. The way to do it would be to have him come out and confront Rollins or the briefcase winner. If WWE really wanted to go big, they'd have Lesnar as a shock late MITB match entry, winning the briefcase and setting up the Rollins SummerSlam match. The advantages of doing that unadvertised is that the result would be way too obvious in the build-up if we knew that Brock was in the match. Keep your eyes out on Sunday, there's sure to be at least one major shock in the course of this fantastic show!