#2 Keep Reigns versus Shane McMahon open-ended

Although WWE is going to want to avoid open-ended finishes throughout much of the pay per view, one of the storylines they can't afford to bring to a conclusion yet is the one between Roman Reigns and Shane McMahon. Not only would doing so pretty much result in Reigns being catapulted to the title picture too early, but it also risks losing some of the momentum WWE has going with this feud.
While Reigns versus McMahon isn't the biggest thing on the card right now, it is something that is entertaining to watch. In fact, between Reigns repeatedly finding ways to outsmart the Billionaire's son and McMahon continuously finding new henchmen, this feud could go on for another month or so.
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Again, it all depends on what WWE wants to do here, but pushing Reigns back into the title picture too early could have disastrous effects for the company. That's not to say it can't happen eventually and shouldn't happen when the right time comes, but for right now, he's much better off railing against the authority.