#2 Have Brock Lesnar cash-in his briefcase
This is more of a suggestion of a failed cash-in rather than a successful one because the WWE Universe has discussed at length the mistake it would be to have Brock Lesnar win another major title. But it's not my company, so his winning another title might be a certainty that we'll all have to live through.
Lesnar is currently off of programming to build up to his actual return and attempted cash in. He tried to cash in on Seth Rollins a few times only to be brushed back at every turn. When he does come back and attempt to cash in once again, it may likely be on SmackDown and Kofi Kingston provided he holds the title through SummerSlam.
When they happen, Money in the Bank cash-ins are always memorable and noteworthy. It either means that someone will become champion for the first time or start another reign. They are also noteworthy if the holder of the briefcase fails. To build suspense and make the greatest impact, keeping Lesnar off of TV until the debut on Fox would be a huge moment if he successfully cashed in or not. I'm for it happening, but hoping for the latter to be the result.