#1 The Undertaker returns and tears the roof off the place

If the WWE is looking to elevate the viewership and ratings of Monday Night Raw, then they definitely need to make a powerful statement by bringing a legend back from the dead. The Undertaker is scheduled to head into a 'once in a lifetime' program with the '16-time World Champion'.
The bout is being speculated to be his final one before he hangs up his boots and if surprises are anything to go by, then the company might be secretly booking one of the greatest returns in WWE history.
Look who just shut down all of Tony Khan's critics! More HERE.
Well, bringing Undertaker back to confront John without any build-up sounds silly to say the least but if they creatively book it, it could work. Assuming that a disappointed Cena falls short to Roman Reigns and is interviewed later about his future with the company and, suddenly the WWE Universe hears a 'gong'.
The gong is enough to tear the roof of the place and, a shocking appearance by the Undertaker amalgamated by a sensational confrontation between the two could end the whole PPV in splendid fashion.