Honestly, I'd rather not see a 6-Man Tag Match at all. Instead of doing that, they could, you know, try something different and maybe create a story that the audience actually cares about. Because right now, this feud seems to be treading water. It was lukewarm filler at SummerSlam, and even with the addition of Bronn Stowman to the Wyatt Family, the feud doesn't really interest me. We've seen Wyatt Family 6-Man Tags a million times before, try something different.
Maybe Bray Wyatt challenges Reigns and Ambrose to a triple threat match. Or a triple threat match between them is booked, with the winner getting an IC Title shot. At first it seems crazy, the deck is stacked against Wyatt and it looks like he's going to be in a 2-on-1 situation. But Bray doesn't seem to care. The Bray Wyatt character is about more than winning and losing, and his real endgame is to drive a wedge between Reigns and Ambrose. The triple threat is the key to doing that. Wyatt can say that at the end of the day, there can be only one winner, and that the so-called "brothers" Reigns and Ambrose will have to fight eah other. He can try to get into Reigns' ear by saying that the fans will never truly accept him and that they will always prefer Ambrose. Basically Wyatt is playing the role of the devil, attempting to plant seeds of dissent between Reigns and Ambrose, and essentially lure Reigns to the dark side. On the final Raw before Night of Champions, it's Reigns and Ambrse vs. Harper and Stowman in a Tag-Team Match, with Bray at ringside. There's some sort of mis-communication between Regins and Amrbose, maybe Ambrose inadvertently hits Reigns and Reigns retaliates with a spear. This ends up costing them the match and the Wyatt Family gets the win. More importantly though, it looks like Bray's evil plan is working heading into the PPV...
In the triple threat at Night of Champions, Reigns and Ambrose start out on the same page but over the course of the match they implode and turn on each other just like Bray planned. Ultimately, Bray capitalizes and wins the match. Bray can then move on to challenge for the IC Title, while a feud between Ambrose and Reigns has just been kicked off...
But no, that would be too interesting.