#3 Epic parlor trick
From the Undertaker to Kane, and even down to Finn Balor, every supernatural Superstar has something that separates their entrance from the rest. Whether that be hellfire burning in the background, red fog creeping into the arena or outright floating down the ramp, it becomes obvious that these Superstars are capable of great things.
Unfortunately for The Fiend, he doesn't really have much of a parlor trick for his entrance, but that doesn't mean the company can't start to incorporate one. In fact, between the great additions the company has already made to The Fiend's character and it's popularity among fans, they could virtually add anything and it would bring a unique feel to it.
Charlotte Flair to return and wrestle a CURRENT CHAMPION?
Maybe WWE could even just cut to a vignette and slowly show Wyatt going to that place where he becomes The Fiend. At least that way, fans can finally see the transition happen right before their very eyes, WWE can do one of their super edits and it will be something everyone will remember!