#4 The Fiend makes his mark

Bray Wyatt's Fiend persona is the surprising success story of 2019. The astonishing thing is that we've only seen him in one match. We haven't seen him in a match in a while, not since he laid a beating on Finn Balor at SummerSlam. This kind of scarcity is building anticipation for his next appearance and making him feel special. We don't see him, but we know he's there. It's the exact opposite of the feel of most of WWE's wrestlers, who feel ordinary.
We know that the Fiend is going to challenge for the Universal Championship at Hell in a Cell. To build that match, which feels special already, he should make an appearance on Sunday night, presumably after Seth Rollins retains the Universal Championship.
By laying a beating on Rollins, or even reuniting with Braun Strowman to do so, the stakes will feel much higher going into October's Hell in a Cell confrontation and end the pay per view on a high note, and make Raw a lot more exciting for the next few weeks.